diff --git a/.changeset/large-nails-greet.md b/.changeset/large-nails-greet.md
new file mode 100644
index 00000000..05b46c33
--- /dev/null
+++ b/.changeset/large-nails-greet.md
@@ -0,0 +1,5 @@
+---
+"@rgbpp-sdk/ckb": minor
+---
+
+refactor: Collect all RGB++ inputs without isMax parameter
diff --git a/packages/ckb/src/collector/index.ts b/packages/ckb/src/collector/index.ts
index 88b5739a..89a2641b 100644
--- a/packages/ckb/src/collector/index.ts
+++ b/packages/ckb/src/collector/index.ts
@@ -110,6 +110,7 @@ export class Collector {
     const changeCapacity = config?.minCapacity ?? MIN_CAPACITY;
     const inputs: CKBComponents.CellInput[] = [];
     let sumInputsCapacity = BigInt(0);
+    const isRgbppLock = liveCells.length > 0 && isRgbppLockCellIgnoreChain(liveCells[0].output);
     for (const cell of liveCells) {
       inputs.push({
         previousOutput: {
@@ -119,7 +120,7 @@ export class Collector {
         since: '0x0',
       });
       sumInputsCapacity += BigInt(cell.output.capacity);
-      if (sumInputsCapacity >= needCapacity + changeCapacity + fee && !config?.isMax) {
+      if (sumInputsCapacity >= needCapacity + changeCapacity + fee && !isRgbppLock) {
         break;
       }
     }
diff --git a/packages/ckb/src/rgbpp/launch.ts b/packages/ckb/src/rgbpp/launch.ts
index 905750b0..a851bfcd 100644
--- a/packages/ckb/src/rgbpp/launch.ts
+++ b/packages/ckb/src/rgbpp/launch.ts
@@ -57,7 +57,7 @@ export const genRgbppLaunchCkbVirtualTx = async ({
   const infoCellCapacity = calculateRgbppTokenInfoCellCapacity(rgbppTokenInfo, isMainnet);
 
   const txFee = MAX_FEE;
-  const { inputs, sumInputsCapacity } = collector.collectInputs(emptyCells, infoCellCapacity, txFee, { isMax: true });
+  const { inputs, sumInputsCapacity } = collector.collectInputs(emptyCells, infoCellCapacity, txFee);
 
   let rgbppCellCapacity = sumInputsCapacity - infoCellCapacity;
   const outputs: CKBComponents.CellOutput[] = [
diff --git a/packages/ckb/src/types/collector.ts b/packages/ckb/src/types/collector.ts
index 9bbb7716..f1db7bc8 100644
--- a/packages/ckb/src/types/collector.ts
+++ b/packages/ckb/src/types/collector.ts
@@ -24,7 +24,6 @@ export interface CollectUdtResult extends CollectResult {
 }
 
 export interface CollectConfig {
-  isMax?: boolean;
   minCapacity?: bigint;
   errMsg?: string;
 }