The invention discloses a multidimensional non-wearable type traffic police gesture identification method and system for driverless vehicles. The method includes the steps of obtaining traffic police gesture four-dimensional data sources from four depth sensors installed on a road crossing, extracting traffic police gesture characteristics with description and differentiability performance, identifying the current traffic police gesture and instruction orientation in combination with a traffic police gesture characteristic dictionary library, transmitting the current geographic position coordinate, the traffic police gesture identification result, the instruction direction to a driverless vehicle on the road crossing, the vehicle parsing the received information and extracting corresponding traffic police instructions on the driving direction, and entering into an automatic response state according to the instructions. The system comprises a traffic police gesture data acquisition apparatus, a traffic police gesture identification apparatus and a driverless vehicle response apparatus. The identification speed is fast, the method and system do not rely on wearable devices, traffic polices are free to command, the influence of the illumination, weather and complex background can be eliminated, and the robustness is good.