The invention discloses an anti-cross-layer-interference method for a power distribution communication wireless private network, relates to the technical field of communication, and is used for solving the technical defect that a traditional anti-cross-layer-interference method cannot effectively increase the system capacity of a power distribution communication wireless private. The anti-cross-layer-interference method for the power distribution communication wireless private network includes the following steps: a cognitive cell client terminal executes frequency spectrum sensing within spectral bandwidth of an uplink channel of a macro cell client terminal; if a data transmission signal of the macro cell client terminal is sensed, a time slot of a downlink channel corresponding to the uplink channel at the moment is judged to be an idle time slot; the cognitive cell client terminal estimates an interference matrix; a cognitive cell base station allocates power for data transmission of the cognitive cell client terminal; and the cognitive cell client terminal transmits data to the cognitive cell base station. The anti-cross-layer-interference method for the power distribution communication wireless private network provided by the invention is used for increasing the system capacity of the power distribution communication wireless private network.