Abstract: A method of evaluation criterion was required to evaluate the jamming effects at laser precision guided weapon by hitpoints. The hitpoints of laser precision guided weapon was acquired from photoelectric hardware-in-the-loop simulation tests. With probability theory and mathematical statistics, the method of evaluation criterion was built. The distribution principle of a laser guided bomb was proved by Kolmogorov-Smirnov test, and an evaluation criterion to evaluate the angle deception jamming effects at a laser guided bomb was made by the method. The evaluation criterion was used to evaluate jamming effects of an angle deception equipment to the laser guided bomb. The method of evaluation criterion, which was a preliminary studies on evaluation criterion, was proved proper by the evaluation.