The invention relates to a passive safety lock and an outdoor switch cabinet with the passive safety lock. The passive safety lock comprises a passive safety lock body, a wireless charging and discharging module, a communication module and a motor unlocking module, wherein the wireless charging and discharging module, the communication module and the motor unlocking module are arranged in the passive safety lock body. The communication module and the motor unlocking module are connected with the wireless charging and discharging module. The motor unlocking module is connected with the communication module. The passive safety lock is novel in design, and the problem that a mechanical lock is prone to rusting in an outdoor lock hole is solved through the passive safety lock; compared with anactive safety lock, the passive safety lock does not need to be electrified for a long time, and the energy-saving effect is achieved; and meanwhile, the state of the passive safety lock can be sentto a monitoring center.