The purified water equipment in the pharmaceutical industry is used to meet the medical needs of equipment for the production of purified water. The quality of the purified water depends on the quality of the source water and the composition and processing capacity of the pharmaceutical purified water system. The configuration of the purified water preparation system shall be determined by comprehensive consideration of the technical and economic indicators such as the quality of source water, changes in water quality, user requirements for purified water quality, investment costs, and operating costs.Reverse osmosis, EDI and other latest processes, targeted high-purity water treatment processes have been specifically designed to meet the water requirements for the preparation of purified water from pharmaceutical companies and hospitals and the preparation of large infusions.