Surgical access system

The utility model provides a surgical access system. The surgical access system comprises an air blowing device, a multi-instrument access platform and a surgical smoke exhaust device, wherein the blowing device is connected with a joint of the multi-instrument passage platform, and an outlet and an inlet of the multi-instrument passage platform are respectively connected with an inflow pipe and an outflow pipe of the surgical smoke exhaust device. During an operation, the insertion depth of the access tube can be adjusted, and the angle of an instrument entering a human body can be adjusted,so that the access tube can be better positioned according to a lesion position or more effectively works under different rectum conditions; meanwhile, better instrument positioning is provided in theoperation process, and if tissue needs to be excised in the operation, the sealing cover can be conveniently removed and installed with one hand; no matter what the size of the operation cavity is, smoke generated in the lapa