Two stage reverse osmosis water treatment equipment in pharmaceutical water, process water, chemical, biological and chemical process of medium pressure boiler replenishment water, medical water, pure water, machinery industry, electronic industry cleaning cooling water, water, pure water for civilian smelting process. The main configuration raw water tank, water pump, mechanical filters, activated carbon filter, precision filter, dosing device, a reverse osmosis pump, a reverse osmosis machine, cleaning device, feeding device, two stage two stage reverse osmosis pump, two stage reverse osmosis machine, water tank, water pump, pure water tank water pump, UV sterilizer, etc..