Abstract: Drawing of the image and the image for local modification is an important issue in digital image processing. Brush tool in Adobe Photoshop CS is the drawing and diagram tools core tools in the group. This article describes the use of the preset brush type, the type of built-in types, external brushes and custom brush drawing of; Using brushes of various blend modes for local modification of the image map; And use the brush tool to stroke along the path, use the brush tool to modify masks, and channels of content, and so on. Practice has proved that the creation of flexibility to use the brush tool to increase efficiency, easier and faster to produce fusion digital images of the works of nature. Practice has proved that the flexibility to use these methods to produce efficient, natural digital video productions.

Key words: brush tool, draw, local modification of the image map, stroke along the path, mask and channel