diff --git a/app/main/api/desc/front/agent.api b/app/main/api/desc/front/agent.api
index d41b730..5d401b4 100644
--- a/app/main/api/desc/front/agent.api
+++ b/app/main/api/desc/front/agent.api
@@ -121,6 +121,14 @@ type (
 	GetInviteLinkResp {
 		InviteLink string `json:"invite_link"` // 邀请链接
 	}
+	// 生成邀请海报（背景图+二维码，返回 base64）
+	GetInvitePosterReq {
+		InviteLink string `form:"invite_link"` // 邀请链接（短链）
+		Format     string `form:"format,optional"` // 返回格式：base64（默认）
+	}
+	GetInvitePosterResp {
+		PosterBase64 string `json:"poster_base64"` // 海报图片 base64（不含 data:image/png;base64, 前缀）
+	}
 	// 获取代理等级特权信息
 	GetLevelPrivilegeResp {
 		Levels                 []LevelPrivilegeItem `json:"levels"`
@@ -244,6 +252,10 @@ service main {
 	@handler GetInviteLink
 	get /invite_link (GetInviteLinkReq) returns (GetInviteLinkResp)
 
+	// 生成邀请海报（背景图+邀请链接二维码）
+	@handler GetInvitePoster
+	get /invite/poster (GetInvitePosterReq) returns (GetInvitePosterResp)
+
 	// 获取代理等级特权信息
 	@handler GetLevelPrivilege
 	get /level/privilege returns (GetLevelPrivilegeResp)
diff --git a/app/main/api/etc/main.dev.yaml b/app/main/api/etc/main.dev.yaml
index ad82b07..67812c6 100644
--- a/app/main/api/etc/main.dev.yaml
+++ b/app/main/api/etc/main.dev.yaml
@@ -58,8 +58,8 @@ WechatH5:
     AppID: "wxb786749edb73eb04"
     AppSecret: "b2aad5ec8788eb1e74a3c385dd5aa282"
 WechatMini:
-    AppID: "xxx" # 小程序的AppID
-    AppSecret: "xxxx" # 小程序的AppSecret
+    AppID: "wxc17ebfe0d5b832b0" # 小程序的AppID
+    AppSecret: "92100f1fbad05309635cea0671d37995" # 小程序的AppSecret
 Query:
     ShareLinkExpire: 604800 # 7天 = 7 * 24 * 60 * 60 = 604800秒
 AdminConfig:
diff --git a/app/main/api/etc/main.yaml b/app/main/api/etc/main.yaml
index 8a6971c..17845fd 100644
--- a/app/main/api/etc/main.yaml
+++ b/app/main/api/etc/main.yaml
@@ -55,8 +55,8 @@ WechatH5:
     AppID: "wxb786749edb73eb04"
     AppSecret: "b2aad5ec8788eb1e74a3c385dd5aa282"
 WechatMini:
-    AppID: "xxx" # 小程序的AppID
-    AppSecret: "xxxx" # 小程序的AppSecret
+    AppID: "wxc17ebfe0d5b832b0" # 小程序的AppID
+    AppSecret: "92100f1fbad05309635cea0671d37995" # 小程序的AppSecret
 Query:
     ShareLinkExpire: 604800 # 7天 = 7 * 24 * 60 * 60 = 604800秒
 AdminConfig:
diff --git a/app/main/api/internal/handler/agent/getinviteposterhandler.go b/app/main/api/internal/handler/agent/getinviteposterhandler.go
new file mode 100644
index 0000000..008c9f2
--- /dev/null
+++ b/app/main/api/internal/handler/agent/getinviteposterhandler.go
@@ -0,0 +1,30 @@
+package agent
+
+import (
+	"net/http"
+
+	"bdqr-server/app/main/api/internal/logic/agent"
+	"bdqr-server/app/main/api/internal/svc"
+	"bdqr-server/app/main/api/internal/types"
+	"bdqr-server/common/result"
+	"bdqr-server/pkg/lzkit/validator"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+func GetInvitePosterHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.GetInvitePosterReq
+		if err := httpx.Parse(r, &req); err != nil {
+			result.ParamErrorResult(r, w, err)
+			return
+		}
+		if err := validator.Validate(req); err != nil {
+			result.ParamValidateErrorResult(r, w, err)
+			return
+		}
+		l := agent.NewGetInvitePosterLogic(r.Context(), svcCtx)
+		resp, err := l.GetInvitePoster(&req)
+		result.HttpResult(r, w, resp, err)
+	}
+}
diff --git a/app/main/api/internal/handler/routes.go b/app/main/api/internal/handler/routes.go
index c0e9e75..18b09a9 100644
--- a/app/main/api/internal/handler/routes.go
+++ b/app/main/api/internal/handler/routes.go
@@ -661,6 +661,11 @@ func RegisterHandlers(server *rest.Server, serverCtx *svc.ServiceContext) {
 					Path:    "/invite_link",
 					Handler: agent.GetInviteLinkHandler(serverCtx),
 				},
+				{
+					Method:  http.MethodGet,
+					Path:    "/invite/poster",
+					Handler: agent.GetInvitePosterHandler(serverCtx),
+				},
 				{
 					Method:  http.MethodGet,
 					Path:    "/level/privilege",
diff --git a/app/main/api/internal/logic/agent/getinviteposterlogic.go b/app/main/api/internal/logic/agent/getinviteposterlogic.go
new file mode 100644
index 0000000..44ed140
--- /dev/null
+++ b/app/main/api/internal/logic/agent/getinviteposterlogic.go
@@ -0,0 +1,66 @@
+package agent
+
+import (
+	"context"
+	"encoding/base64"
+	"strings"
+
+	"bdqr-server/app/main/model"
+	"bdqr-server/common/ctxdata"
+	"bdqr-server/common/xerr"
+
+	"github.com/pkg/errors"
+
+	"bdqr-server/app/main/api/internal/svc"
+	"bdqr-server/app/main/api/internal/types"
+
+	"github.com/zeromicro/go-zero/core/logx"
+)
+
+type GetInvitePosterLogic struct {
+	logx.Logger
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+}
+
+func NewGetInvitePosterLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetInvitePosterLogic {
+	return &GetInvitePosterLogic{
+		Logger: logx.WithContext(ctx),
+		ctx:    ctx,
+		svcCtx: svcCtx,
+	}
+}
+
+func (l *GetInvitePosterLogic) GetInvitePoster(req *types.GetInvitePosterReq) (resp *types.GetInvitePosterResp, err error) {
+	// 1. 需登录且为代理
+	userID, err := ctxdata.GetUidFromCtx(l.ctx)
+	if err != nil {
+		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "获取用户信息失败, %v", err)
+	}
+
+	_, err = l.svcCtx.AgentModel.FindOneByUserId(l.ctx, userID)
+	if err != nil {
+		if errors.Is(err, model.ErrNotFound) {
+			return nil, errors.Wrapf(xerr.NewErrMsg("您不是代理"), "")
+		}
+		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "查询代理信息失败, %v", err)
+	}
+
+	// 2. 邀请链接不能为空
+	inviteLink := strings.TrimSpace(req.InviteLink)
+	if inviteLink == "" {
+		return nil, errors.Wrapf(xerr.NewErrMsg("邀请链接不能为空"), "")
+	}
+
+	// 3. 调用 ImageService 生成邀请海报（背景图 + 二维码）
+	imgData, _, err := l.svcCtx.ImageService.ProcessImageWithQRCode("invitation", inviteLink)
+	if err != nil {
+		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "生成海报失败: %v", err)
+	}
+
+	// 4. 返回 base64
+	posterBase64 := base64.StdEncoding.EncodeToString(imgData)
+	return &types.GetInvitePosterResp{
+		PosterBase64: posterBase64,
+	}, nil
+}
diff --git a/app/main/api/internal/service/imageService.go b/app/main/api/internal/service/imageService.go
index 6c5ad79..922a773 100644
--- a/app/main/api/internal/service/imageService.go
+++ b/app/main/api/internal/service/imageService.go
@@ -26,13 +26,13 @@ func NewImageService() *ImageService {
 
 // ProcessImageWithQRCode 处理图片，在中间添加二维码
 func (s *ImageService) ProcessImageWithQRCode(qrcodeType, qrcodeUrl string) ([]byte, string, error) {
-	// 1. 根据qrcodeType确定使用哪张背景图
+	// 1. 根据qrcodeType确定使用哪张背景图（与 uniapp_ycc/src/static/invitation 下海报一致，需复制到本目录 static/images）
 	var backgroundImageName string
 	switch qrcodeType {
 	case "promote":
 		backgroundImageName = "tg_qrcode_1.png"
 	case "invitation":
-		backgroundImageName = "yq_qrcode_1.png"
+		backgroundImageName = "invitation_01.png" // 与 uniapp static/invitation/invitation_01.png 同一张图，部署时拷贝到 static/images
 	default:
 		backgroundImageName = "tg_qrcode_1.png" // 默认使用第一张图片
 	}
@@ -79,10 +79,10 @@ func (s *ImageService) ProcessImageWithQRCode(qrcodeType, qrcodeUrl string) ([]b
 
 	case "invitation":
 		// invitation类型：精确设置二维码尺寸
-		qrSize = 360 // 固定尺寸320px
+		qrSize = 138 // 固定尺寸320px
 		// 中间偏上位置
 		qrX = (imgWidth - qrSize) / 2 // 水平居中
-		qrY = 555                     // 垂直位置200px
+		qrY = 140                     // 垂直位置200px
 
 	default:
 		// 默认（promote样式）
@@ -162,7 +162,7 @@ func (s *ImageService) CheckImageExists(qrcodeType string) bool {
 	case "promote":
 		backgroundImageName = "tg_qrcode_1.png"
 	case "invitation":
-		backgroundImageName = "yq_qrcode_1.png"
+		backgroundImageName = "invitation_01.png"
 	default:
 		backgroundImageName = "tg_qrcode_1.png"
 	}
diff --git a/app/main/api/internal/types/agent.go b/app/main/api/internal/types/agent.go
index e288ae9..8b09565 100644
--- a/app/main/api/internal/types/agent.go
+++ b/app/main/api/internal/types/agent.go
@@ -116,6 +116,17 @@ type GetInviteLinkResp struct {
 	InviteLink string `json:"invite_link"` // 邀请链接
 }
 
+// GetInvitePosterReq 生成邀请海报请求（邀请链接 + 可选 format=base64）
+type GetInvitePosterReq struct {
+	InviteLink string `form:"invite_link"`           // 邀请链接（短链）
+	Format     string `form:"format,optional"`       // 返回格式：base64（默认）
+}
+
+// GetInvitePosterResp 生成邀请海报响应
+type GetInvitePosterResp struct {
+	PosterBase64 string `json:"poster_base64"` // 海报图片 base64（不含 data:image/png;base64, 前缀）
+}
+
 type GetLevelPrivilegeResp struct {
 	Levels                 []LevelPrivilegeItem `json:"levels"`
 	UpgradeToGoldFee       float64              `json:"upgrade_to_gold_fee"`
diff --git a/app/main/api/static/images/invitation_01.png b/app/main/api/static/images/invitation_01.png
new file mode 100644
index 0000000..06e65ff
Binary files /dev/null and b/app/main/api/static/images/invitation_01.png differ