diff --git a/server/HoneyBox/src/HoneyBox.Core/Services/InvitationService.cs b/server/HoneyBox/src/HoneyBox.Core/Services/InvitationService.cs
index fd4056fb..0874830d 100644
--- a/server/HoneyBox/src/HoneyBox.Core/Services/InvitationService.cs
+++ b/server/HoneyBox/src/HoneyBox.Core/Services/InvitationService.cs
@@ -72,7 +72,7 @@ public class InvitationService : IInvitationService
 
         // 获取分享配置
         var shareTitle = await GetShareTitleAsync();
-        var shareImage = string.Empty; // 海报图片需要单独生成，这里暂时返回空
+        var shareImage = await GetShareImageAsync();
 
         return new InvitationInfoResponse
         {
@@ -255,5 +255,35 @@ public class InvitationService : IInvitationService
         return string.Empty;
     }
 
+    /// <summary>
+    /// 获取分享海报图片配置
+    /// </summary>
+    /// <returns>分享海报图片URL</returns>
+    private async Task<string> GetShareImageAsync()
+    {
+        var config = await _dbContext.Configs
+            .FirstOrDefaultAsync(c => c.ConfigKey == "base");
+
+        if (config?.ConfigValue == null)
+        {
+            return string.Empty;
+        }
+
+        try
+        {
+            var jsonDoc = JsonSerializer.Deserialize<JsonElement>(config.ConfigValue);
+            if (jsonDoc.TryGetProperty("share_image", out var shareImage))
+            {
+                return shareImage.GetString() ?? string.Empty;
+            }
+        }
+        catch (Exception ex)
+        {
+            _logger.LogWarning(ex, "解析分享海报图片配置失败");
+        }
+
+        return string.Empty;
+    }
+
     #endregion
 }