A method for identifying installation positions of sensors, which predefines the corresponding relationship between the first sliding member, the second sliding member and the signal features according to the installation directions of the sensors, and then drives the first sliding member and the second sliding member of one of the feed systems to move to obtain and analyze the three-axis signals fed back from the sensors, firstly select responsive three-axis signals, and then determine the axis with the largest response of the three-axis signals so as to identify the sensor installed on the first sliding member. Then, the corresponding relationship between the remaining three-axis signals and the sensors installed on the second sliding members is identified based on the dynamic signal feature and the static signal feature, so as to achieve the purpose of automatically identifying the installation position of the respective sensors.