The invention discloses a tilt self-adaptive displacement measuring method based on bundle triangulation, which relates to the technical field of precise detection and aims at solving the technical problem on the improvement of measurement accuracy. The method comprises the following steps: firstly, comparing measured light spot images with reference light spot images, and calculating a displacement error curve function of a measured object; secondly, calculating displacement information of the measured object according to the positions of the measured light spot images on a light receiver; and then, compensating the displacement information of the measured object according to the displacement error curve function of the measured object to obtain a final displacement measuring result of the measured object. The method can carry out self-adaptive error compensation on measuring errors caused by various object surface tilt of the measured object and can improve the measurement accuracy.