Fuente: WIPO "circular economy" The invention belongs to the technical field of Internet of Things, and particularly relates to a user demand-based Internet of Things service discovery method, which comprises the following steps of: obtaining historical service request data of a user, and establishing an input sample data set; based on a Bi-LSTM network, constructing a user demand prediction model; according to the service quality demand of the user, calculating a first weight value of the user for the service quality demand through an analytic hierarchy process; according to the service quality evaluation index, calculating a second weight value of the user for the service quality demand through an entropy method; according to the first weight value and the second weight value of the user on the service quality, calculating a mixed weight value of service quality evaluation by adopting an arithmetic average method; according to the mixed weight value, a TOPSIS multi-attribute decision-making method is adopted to match the service meeting the requirements of the user for the user, and a service discovery result is generated, and the scheme can match the service meeting the requirements of the user for the user in the dynamically changing Internet of Things environment, so that the service matching accuracy is improved.