According to the characteristics of energy acquisition applied to tags, a monitoring circuit was added between the energy acquisition module and the tag module, and the cooperative working strategy of energy acquisition and tags was put forward based on the setting of high and low thresholds. The low threshold selection principle is to ensure that the energy storage of the energy storage module can ensure the one-time broadcasting of the tag and prevent the tag from entering the power down state to the maximum extent. The optimal value of energy storage capacitance, minimum and optimal radio frequency (RF) input power in the environment were deduced by starting from the broadcast interval and power required in the tag design goal according to the amount of energy that can be collected in the environment and the change of energy consumption required by the tag in different states. A tag based on RF acquisition was designed by using P2110B and CC2640R2F chip for verification. Test results show that the energy acquisition tag designed by this method can realize the cooperative work of energy acquisition module and tag module. The tag can carry out continuous “sleep and broadcast” cycle when the RF input power is greater than the optimal value. It can effectively prevent the label from falling into “energy deadlock”, and can adaptively switch in different working states.