Abstract: In July and August 2013, a survey was conducted in Hainan Wenchang, Qionghai, Wanning, East and other regions’100 shrimp hatcheries to investigate the effect of six water treatment methods, including sand filter wells, sedimentation tanks, sand filters, activated carbon filters, ultraviolet disinfection and sterilization chemicals, and discuss the role of the various parts in water treatment. The findings suggest that among different combinations of methods for seawater treatment, more than 90% of seawater breeding nursery use sand filtration, ultraviolet disinfection only accounts for 5%. The traditional treatment methods are less used than in the past, most hatcheries are reforming the water treatment systems and introducing new equipment. Experimental results show that seawater treated firstly by activated carbon filter and then by sand filtration, ultraviolet disinfection and formaldehyde disinfection can reduce COD and total bacterial content significantly (P＜0.05), and the removal and decline rate are more than 22.80% and 99.00%, but the oxygen content of the water has a downward trend, with no obvious effect on the pH value (P＞0.05). The survey can provide a reference for the practical application of shrimp breeding and development of new technologies.