diff --git a/server-rs/crates/platform-image/src/image_provider/protocol/request.rs b/server-rs/crates/platform-image/src/image_provider/protocol/request.rs
index 06ba2a149..b60a93f2b 100644
--- a/server-rs/crates/platform-image/src/image_provider/protocol/request.rs
+++ b/server-rs/crates/platform-image/src/image_provider/protocol/request.rs
@@ -4,7 +4,7 @@ use crate::image_provider::{
     constants::{
         GPT_IMAGE_2_5_BUSINESS_NAME, GPT_IMAGE_2_5_EDIT_MODEL, GPT_IMAGE_2_5_GENERATION_MODEL,
         GPT_IMAGE_2_C_MODEL, GPT_IMAGE_2_DIMENSION_ALIGNMENT, GPT_IMAGE_2_MAX_EDGE,
-        GPT_IMAGE_2_MAX_PIXELS, GPT_IMAGE_2_MIN_PIXELS, GPT_IMAGE_2_MODEL,
+        GPT_IMAGE_2_MAX_PIXELS, GPT_IMAGE_2_MIN_PIXELS, GPT_IMAGE_2_MODEL, NANOBANANA_2_MODEL,
     },
     types::{ImageProvider, ImageProviderSettings, ReferenceImage},
 };
@@ -104,7 +104,7 @@ pub fn resolve_image_provider(model: &str) -> Result<ImageProvider, &'static str
         | GPT_IMAGE_2_5_BUSINESS_NAME
         | GPT_IMAGE_2_5_GENERATION_MODEL
         | GPT_IMAGE_2_5_EDIT_MODEL => Ok(ImageProvider::Tiantoken),
-        "gemini-3.1-flash-image-preview" => Ok(ImageProvider::VectorEngine),
+        NANOBANANA_2_MODEL => Ok(ImageProvider::VectorEngine),
         _ => Err("不支持的图片模型"),
     }
 }