Equipment health is a quantitative assessment of the health status of a device and can more accurately reflect the real health status of the device. Existing health assessment methods do not reflect the health status of the device. Aiming at the health evaluation of a certain type of radar transmitter, an accurate health assessment method based on dynamic weight is proposed. In this study, the exponential function is used to model the dynamic variation of the weight of each parameter, and then the weighted standard Euclidean distance between the acquisition vector and the best vector is calculated, which can evaluate the health status of the equipment more accurately. The actual test of a certain type of radar transmitter shows that the calculation result of this method is accurate and reliable, and can better reflect the health status of the equipment.