The invention discloses a method for measuring three-dimension altitude angles, comprising the steps of forming facula images on an image sensor by two parallel light beams through pinhole diaphragms; recognizing all faculas by group respectively; obtaining the corresponding two-dimension altitude angles respectively according to the mass center coordinates of faculas corresponding to the two parallel light beams; and obtaining the three-dimension altitude angles based on a dual-vector altitude determination principle according to the two-dimension altitude angles respectively corresponding to the two parallel light beams. The invention also discloses a system for measuring the two-dimension altitude angle. By adopting the scheme, the measurement on the three-dimension altitude angles can achieve the angle measurement scope with a large range; and furthermore, the design of the system has no relationship with the working distance by taking the two parallel light beams and the pinhole diaphragms as the optical system.