The invention discloses a mobile forklift truck automatic tracking method. The method is used for solving the problems that a forklift truck working environment has a lot of people and is complicated,and a forklift truck fails to track precisely and uniquely. The method comprises the steps that S1, preset positioning label accurate position information is obtained through a wireless positioning sensor; S2, preset data information of a plurality of obstacles in a preset laser scanning scope are obtained through a laser sensor, and preset position data information, of the multiple obstacles, corresponding to preset tracking characteristics is obtained according to a preset clustering analysis algorithm; and S3, the preset positioning label accurate position information and the multiple preset position data information are subjected to matching according to a preset matching algorithm, the unique preset position data information matched with the preset positioning label position information is obtained, and an obstacle on the preset position data information is used as the unique tracking object. By means of the method, the accuracy and uniqueness of forklift truck tracking can be guaranteed.