The invention relates to an automatic sowing robot. The automatic sowing robot comprises a walking tractor, a fixing plate, a mounting plate, two discharging boxes, two step frames, eight automatic planting devices and a shock-absorbing supporting device, wherein the walking tractor is mounted on the fixing plate through bolts; the middle part of the mounting plate is mounted on the lower side of the front end of the fixing plate through bolts; the two discharging boxes are mounted on the left side and the right side of the upper end surface of the mounting plate respectively; the two step frames are welded on the left side and the right side of the lower end surface of the mounting plate; the eight automatic planting devices are mounted on eight step surfaces of the two step frames respectively; the shock-absorbing supporting device is mounted on the back side of the lower end surface of the fixing plate. The shock-absorbing supporting device overcomes the difficulties of complex operation, high labor intensity, long working time, low planting speed, low degree of mechanization, low working efficiency and the like in the conventional way of artificially planting rhizomatous Chinese herbs, achieves the function of automatically planting the rhizomatous Chinese herbs, and provides a way of mechanically planting the rhizomatous Chinese herbs.