Abstract: The present invention discloses an integrated rotary machine chip for a laser radar sensor, comprising: a machine chip body, wherein two positioning bearings are arranged on the upper side and the lower side of the machine chip body respectively, the machine chip body includes a ranging transmitting board, a ranging receiving board, a laser ranging transmitting module, a laser ranging receiving module and a ranging mainboard, wherein the ranging transmitting board and the ranging receiving board are arranged on two sides of the machine chip body respectively. The present invention guarantees the optical path consistency before and after optically debugging the machine chip and adding the optical enclosure, and increases the ranging accuracy and stability; the machine chip is integrated in one piece, the three-dimensional space of the machine chip reasonably used, and the number of components is reduced.