The software is used modularity and qeneric idea, realize target recognition and accurately spraying, it consist of five modules: module of image process, module of identifing the crop from the background of elaphic, module of target recognition and classification of treatment, module of intelligent decision-making and helpness. Image process is made of distortion adjustment,gray strengthen, neighbourhoods average, histogram equalization and median filter; the module of identifing the crop from the background of elaphic is made of division of green strength threshold, division of H hue threshold and segmentation afterwards process and so on; the module of target recognition consist of recognition of fruiter, rice, wheate and target process and area calculating, the module of recognition of fruiter include centre recognition function; the module of intelligent decision-making include information target transmited. The system has fault-tolerant function and automatically judges the input of image or not, automatically detects input of camera and terminal setting, connection situation of singlechip, creating executable file, breaking away from VC++ then direct running. Limiting surface of software system is friendly, simple clear and satisfy the real-time processing the request.