The invention relates to a photovoltaic module wiring device for photovoltaic power generation, which comprises a connector and a mounting head, the right end of the connector is provided with a jack, the left end of the mounting head is fixedly connected with a plug inserted into the jack, the connector is provided with a mounting assembly, and a sealing assembly is arranged between the connector and the mounting head. Cable heads are fixedly connected to the ends, opposite to each other, of the connector and the mounting head, adjustable protection assemblies are arranged at the bottoms of the ends, opposite to each other, of the connector and the mounting head, and cables are fixedly connected to the ends, opposite to each other, of the connector and the mounting head. According to the photovoltaic assembly wiring device for photovoltaic power generation, the installation assembly is arranged on the connector, the installation head and the connector can be rapidly connected through the installation assembly, so that connection of two cables is achieved, later-stage disassembly is facilitated, operation is easy and convenient, the sealing assembly is arranged between the installation head and the connector, the connection sealing performance of the installation head and the connector is guaranteed, and the installation head and the connector are convenient to use. The use is convenient.