diff --git a/mods/dr_game/Difficult_Rocket_rs/src/src/python/data.rs b/mods/dr_game/Difficult_Rocket_rs/src/src/python/data.rs
index 88fad42..3a1609b 100644
--- a/mods/dr_game/Difficult_Rocket_rs/src/src/python/data.rs
+++ b/mods/dr_game/Difficult_Rocket_rs/src/src/python/data.rs
@@ -11,7 +11,6 @@ use crate::sr1_parse::{get_max_box, SR1PartData, SR1PartListTrait};
 use crate::sr1_parse::{SR1PartList, SR1PartType, SR1Ship};
 use crate::IdType;
 
-// use serde_xml_rs::to_string;
 use quick_xml::se::to_string;
 
 #[pyclass]
diff --git a/mods/dr_game/Difficult_Rocket_rs/src/src/sr1_parse.rs b/mods/dr_game/Difficult_Rocket_rs/src/src/sr1_parse.rs
index 76bcd79..2112021 100644
--- a/mods/dr_game/Difficult_Rocket_rs/src/src/sr1_parse.rs
+++ b/mods/dr_game/Difficult_Rocket_rs/src/src/sr1_parse.rs
@@ -6,7 +6,7 @@ use crate::dr_physics::math::{Edge, Shape};
 use crate::dr_physics::math::{Point2D, Rotate};
 use crate::sr1_parse::part_list::Damage as RawDamage;
 use crate::sr1_parse::part_list::{AttachPoint, AttachPoints, Engine, Lander, Rcs, Shape as RawShape, Solar, Tank};
-use crate::sr1_parse::part_list::{RawPartList, RawPartType, SR1PartTypeEnum};
+use crate::sr1_parse::part_list::{RawPartList, RawPartType, SR1PartTypeEnum, FuelType};
 use crate::sr1_parse::ship::{
     Activate as RawActivate, Connection, Connections, DisconnectedPart as RawDisconnectedPart,
     DisconnectedParts as RawDisconnectedParts, Engine as RawEngine, Part as RawPartData, Parts as RawParts,
@@ -41,7 +41,7 @@ pub enum SR1PartTypeAttr {
     Tank {
         fuel: f64,
         dry_mass: f64,
-        fuel_type: i32,
+        fuel_type: FuelType,
     },
     Engine {
         power: f64,
@@ -53,7 +53,7 @@ pub enum SR1PartTypeAttr {
         /// 1 -> Rcs
         /// 2 -> 电量
         /// 3 -> 固推
-        fuel_type: i32,
+        fuel_type: FuelType,
         throttle_exponential: bool,
     },
     Rcs {
@@ -219,11 +219,13 @@ pub trait SR1PartDataTrait {
 
 pub trait SR1PartListTrait {
     fn to_sr_part_list(&self, name: Option<String>) -> SR1PartList;
+    #[allow(unused)]
     fn to_raw_part_list(&self) -> RawPartList;
 }
 
 pub trait SR1ShipTrait {
     fn to_sr_ship(&self, name: Option<String>) -> SR1Ship;
+    #[allow(unused)]
     fn to_raw_ship(&self) -> RawShip;
 }
 
diff --git a/mods/dr_game/Difficult_Rocket_rs/src/src/sr1_parse/data_structure/part_list.rs b/mods/dr_game/Difficult_Rocket_rs/src/src/sr1_parse/data_structure/part_list.rs
index 3c94bc9..2e6ef46 100644
--- a/mods/dr_game/Difficult_Rocket_rs/src/src/sr1_parse/data_structure/part_list.rs
+++ b/mods/dr_game/Difficult_Rocket_rs/src/src/sr1_parse/data_structure/part_list.rs
@@ -149,11 +149,17 @@ impl Damage {
 }
 
 // This enumeration can be considered to replace the integer-represented "fuel type".
+#[derive(Debug, Serialize, Deserialize, Copy, Clone, Default)]
 pub enum FuelType {
-    Common,
-    Rcs,
-    Battery,
-    Soild,
+    /// 就是液体燃料
+    #[default]
+    Common = 0,
+    /// RCS 推进剂
+    Rcs = 1,
+    /// 电!!!!!
+    Battery = 2,
+    /// 固推神教!
+    Soild = 3,
 }
 
 #[derive(Debug, Serialize, Deserialize, Copy, Clone)]
@@ -167,7 +173,7 @@ pub struct Tank {
     // 2 -> 电量
     // 3 -> 固推
     #[serde(rename = "@fuelType")]
-    pub fuel_type: Option<i32>,
+    pub fuel_type: Option<FuelType>,
 }
 
 #[derive(Debug, Serialize, Deserialize, Copy, Clone)]
@@ -181,7 +187,7 @@ pub struct Engine {
     #[serde(rename = "@turn")]
     pub turn: f64,
     #[serde(rename = "@fuelType")]
-    pub fuel_type: Option<i32>,
+    pub fuel_type: Option<FuelType>,
     #[serde(rename = "@throttleExponential")]
     pub throttle_exponential: Option<bool>,
 }
@@ -286,7 +292,7 @@ impl SR1PartTypeData for RawPartType {
                 Some(SR1PartTypeAttr::Tank {
                     fuel: tank.fuel,
                     dry_mass: tank.dry_mass,
-                    fuel_type: tank.fuel_type.unwrap_or(0),
+                    fuel_type: tank.fuel_type.unwrap_or_default(),
                 })
             }
             SR1PartTypeEnum::engine => {
@@ -296,7 +302,7 @@ impl SR1PartTypeData for RawPartType {
                     consumption: engine.consumption,
                     size: engine.size,
                     turn: engine.turn,
-                    fuel_type: engine.fuel_type.unwrap_or(0),
+                    fuel_type: engine.fuel_type.unwrap_or_default(),
                     throttle_exponential: engine.throttle_exponential.unwrap_or(false),
                 })
             }