The invention discloses a method for preventing a risky pressure plate from mis-switching during line relay protection scheduled inspection. The method includes, adding a circuit for preventing the mis-switching to the circuit with the risk of mis-touching in the existing protection; controlling an outlet of a device through the state of the pressure plate; and locking the protection under the scheduled inspection state, only when all the pressure plates related to the operation intervals are in an exit state, the protection can be unlocked, and when one or more of the pressure plates relatedto the operation are switched accidentally, the protection function of the device is in a locked state and outlet operation stops. According to the use of the method, the cost during each scheduled inspection can be reduced; and as the self-feedback of the device is adopted to realize the function, the mis-switching of the pressing plates is not affected by personnel factors, and the risk of mis-operation of the operation intervals in the scheduled inspection process is fundamentally avoided, and the method has strong popularization and application value.