The invention relates to a pre-embedded fusion tube verifying method comprising the following nine steps: spot check, low-temperature test, first room temperature recovery, high-temperature test, second room temperature recovery, cycle test, seal test, resistance measurement, and sample sealing. The process design of the pre-embedded fusion tube verifying method is reasonable. A fusion tube needing test is tested continuously in high- and low-temperature environments, and temperature differences alternate. Then, seal test is carried out using helium. The whole verification test process is carried out using equipment, and the measured data is relatively accurate and reliable. By using the method to test the sealing performance and contact resistance, the overall quality of the fusion tube is of high reference value.