本文仅就双循环摆线内啮合齿轮(内、外齿轮)的测量问题,提出了用齿厚游标卡尺来测量外齿轮分度圆弦齿厚和用钢球或园棒测量内齿轮齿厚的方法。并推导出计算公式和对每种测量方法进行了简要的分析。从而看出这种测量方法,灵敏度高、量具简单、测量方便。因此,是一种很实用的测量方法。 In this paper, the method of measuring the tooth thickness of external gear graduation circular chord and the tooth thickness of internal gear measured by steel ball or garden rod with the tooth thickness vernier caliper was proposed only for the measurement of the double-ring cycloid internal gear (internal and external gears) . And derive the calculation formula and a brief analysis of each measurement method. This shows that this measurement method, high sensitivity, measuring simple, easy to measure. Therefore, it is a very practical measurement method.