The utility model relates to an electronic clamping device, including the traveller of leading of two lateral separations setting, two lead through the connection of two baffles between the traveller, the baffle transversely overlaps respectively locates two tip of leading the upper and lower both ends of traveller, two baffles are fixed in on the fixed plate, leading on the traveller respectively, the slip cap is equipped with two sliding sleeves, a horizontal insulation board has been cup jointed on the sliding sleeve respectively, insulation board one end is cup jointed on one leads the sliding sleeve of traveller, on the other end cup joints and leads the sliding sleeve that the traveller corresponds with another, the horizontal fixedly connected with of difference splint on the insulation board, still be provided with a cam that is used for adjusting distance between two splint between the splint, the cam is through a motor drive, just be located on leading the traveller it is equipped with a spring still to overlap respectively between baffle and the sliding sleeve. The utility model has the advantages of realize automatic centre gripping, control is nimble convenient.