Abstract: This article explores the relevant experiments on the analysis of total phosphorus between the company's circulating water,sewage,and boiler water.By studying and examining the measurement experiments of total phosphorus content between the company's boiler water,sewage,and circulating water,it explores and tests the influencing factors of three types of total phosphorus analysis in water quality.It also attempts to track and analyze the total phosphorus in water quality before and after adding chemicals,and obtain the optimal dosing cycle and amount of corresponding water quality chemicals,Thus achieving the goal of providing technical support for the production control of the device.