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In order to solve the simple and fast problem of camera lens distortion correction, a method based on linear projection feature was designed. The main reason and distortion model of lens are introduced. The relation between three points of a straight line under ideal projection is given, and the fitness function is determined. Matlab software based on the preparation of calibration procedures, and experimental verification. The experiment shows that the image distortion correction can be achieved by using the optimal solution of the distortion parameter set. The calibration method in this paper can realize the correction of camera lens distortion parameters only if there is a straight line in the scene. The experimental conditions are simple, the program is simple, and the field correction is convenient.