Abstract: Aiming at the problems that labor intensity of manual sampling way for entree truck coal was great and only human operating mechanical sampling equipment was difficult to control falsification phenomena of entree coal,the paper introduced design of a intelligent sampling and control system for entree truck coal.The system is composed of carriage positioning and siting subsystem,coordinate transformation of sampling points subsystem,field control subsystem,database subsystem and communication subsystem,adopts digital image processing technology and improved fuzzy edge-detection algorithm to realize automatic positioning and siting of carriage and field automatic sampling control is completed by PLC when coordinate of sampling points is transferred.Practical application showed the system has high precision,good reliability,convenient operation and can meet practical need.