This paper presents some problems of noise margin test methodin the MIL-STD-883K use. Based on the analysis of the noise margin test methods used in the industry, the differences, advantages and disadvantages of the methods are compared. Analyzing the reason why noise margin test in the standard method is rarely revised, the paper proposes the applicability of the noise margin test methods in MILSTD883K and the industry, and revision directionsforour corresponding standard in China. The test results show that maximum product criteria and dynamic maximum equal criteria are applicable in a wide range, and can be used in the corresponding standards in China.