In this study, a coaxial thermocouple subjected to impact through a junction manufacturing process was investigated. The performance of the impact-type coaxial thermocouple was analyzed through impact and thermal tests to evaluate the resistance of the thermocouple to external forces and heat. In addition, shock tunnel experimental tests were conducted to assess the durability of the thermocouple in a hypersonic environment. The findings indicated that the impact-type coaxial thermocouple exhibited satisfactory resistance to external heat. Moreover, the results exhibited sufficient repeatability, and the performance of the impact-type coaxial thermocouple was determined to be comparable to that of the conventional coaxial thermocouple.