# Replace Block [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [Commands](Help%20System/GSTARCAD/2021/Commands/(Commands).md) → [B](Help%20System/GSTARCAD/2021/Commands/B/(B).md) ## Replace Block In the current drawing, you can use one block to replace another one, moreover, you can purge the unreferenced block when the operation is finished.  **Menu:** Express tools\>Blocks\>Replace Block **Command Entry:** BLOCKREPLACE *Select a block to replace*: Double bed. Then select: OK  Select the block to be replaced: Sofa. Then select: OK  Purge unreferenced items when finished? Yes/No See the result below:  --- Gstarsoft Co.,Ltd