For good features such as high sensitivity, fast response speed, small volume and high damage threshold, the pyroelectric detector as the sensor of the laser energy meter is widely used in laser energy detection. Limited by the manufacture process, the thermal surface sensitivity coefficients of the pyroelectric laser energy meter has spatial non-uniformity problem. When the laser irradiates the different positions of the detector, the results of the laser energy measurement is different. To solve this problem, a pyroelectric laser energy meter spatial uniformity calibration method is designed. Through controlling the light path of the pyroelectric detector, the influence on measured results from spatial uniformity is removed. And the feasibility of the method is verified by the experiments.