The invention provides a nuclear power station primary loop main equipment direct connecting manner. Nuclear power station primary loop main equipment comprises a reactor pressure vessel, a steam generator, a pressurizer and an integral top cover module. The steam generator is connected with the integral top cover module through a connector. The pressurizer is connected with the integral top cover module through another connector. The nuclear power station primary loop main equipment effectively lowers the load borne by pipelines and increases the rigidity of the whole primary loop equipment mechanical system.