To ensure the accuracy of calibrating platinum resistance with a dry block calibrator, a series of measures need to be taken. Regular calibration and maintenance of the dry block calibrator are the basis to ensure its own accuracy. During the measurement process, high-precision and stable measuring instruments should be used to read the data of the platinum resistance. At the same time, environmental factors should be strictly controlled, such as avoiding strong electromagnetic field interference around to prevent affecting the measurement results. The leads of the platinum resistance should be correctly handled to reduce the influence of lead resistance on the measurement. Moreover, operators should receive professional training, be familiar with the calibration process and operating specifications, and reduce human errors, so as to comprehensively ensure the accuracy of calibrating platinum resistance with the dry block calibrator.