Client computer controlling remote server computer or devices is usual for industry and agriculture automation. A monitor software system adopted C/S frame based on new algorithms of compressing image including improved LZ77, LZSS, LZW is designed. The client computer obtains compressed desktop image of remote server then decompresses the image on the client window to fulfill some mouse and keyboard actions of remote servers. Advantage of the control system by the new compress algorithms is that size of compressed image is smaller and system response time is shorter.