In order to solve the problems of experts' hesitation and the lack of dynamics in the process of determining the weights of technical condition assessment for complex equipment, a Hamacher interval fuzzy algorithm is proposed by combining the interval-valued hesitation fuzzy entropy, Pythagorean fuzzy set and Hamacher operator. The interval-valued hesitation fuzzy set is constructed by integrating the scores of each expert on the importance of each element, the interval-valued hesitation fuzzy entropy is improved, and the interval-value hesitation fuzzy entropy matrix is obtained by operating each hesitation fuzzy element in the fuzzy set; The Pythagorean fuzzy set is obtained by taking the interval value hesitation fuzzy entropy as the membership degree and the scoring interval difference as the hesitation degree, and the Hamacher interval fuzzy algorithm is used to calculate the score function of each element importance, and the score function is normalized to obtain the final element weight. The results of the example show that the verification method is applicable to the state of technology assessment.