After long-term use of Vicat softening temperature testers, problems such as temperature indication deviation and inaccurate heating rate often occur. To address this, a high-precision calibration device based on the principle of dynamic testing has been developed. This device is equipped with an auto-triggered image acquisition and temperature recording device, which can real-time capture the deformation critical point and accurately record the temperature at the moment when the sample undergoes a 1 mm deformation or is pierced by the pressure needle. Its working process includes steps such as sample placement and parameter setting, with smooth connection between each step. In practical tests, the device shows obvious advantages: at a heating rate of 12℃/6 min, the actual heating rate ranges from (11.9~12.1)℃/6 min, and the temperature indication error is (-0.1~0.2)℃; at a heating rate of 5℃/6min, the actual heating rate is in the range of (4.9~5.1)℃/6 min, and the temperature indication error is (-0.1~0.2)℃, all meeting the technical requirements. Through analysis, the standard uncertainty of temperature indication error is 0.067℃, and the standard uncertainty of heating rate error is 0.091℃/h. The innovation of this research lies in the proposal of a dynamic heating calibration method, optimization of dynamic acquisition strategy, and integration of intelligent calibration algorithms with automated processes, which can support synchronous calibration of multiple temperature points and multiple sample stations. This device effectively solves the problems existing in current calibration methods, realizes synchronous dynamic and accurate measurement of temperature and heating rate, provides a reliable guarantee for material thermal performance testing, and plays an important role in fields such as material research and development and quality control.