The invention provides an equipment cooling water system for a passive safe pressurized water reactor of a nuclear power plant. The equipment cooling water system comprises two independent cooling systems including one on-operating system and one standby system, a plurality of users and two between-row public mother pipes, wherein the two between-row public mother pipes are connected between mother pipes of the two cooling systems, to realize connection or isolation between the two cooling systems through a between-row isolation valve; the users comprises two rows of independent articulated users, namely a row A and a row B, between-row public mother pipe articulated users and crossed articulated users articulated between the two cooling systems. Compared with the prior art, by adopting two rows of independent arrangement, the isolation measures between the users are enhanced, the isolated examination and repair of the system and users are facilitated, the reliability and the usability of non-safe defense in depth users are improved, and put into operation of a passive system is avoided as much as possible.