This study aims at assessing rainwater quality in Soc Trang province in 2021. Water quality parameters include pH, sulphate (SO₄^2-), nitrite (N-NO₂^-), nitrate (N-NO₃^-), ammonium (N-NH₄⁺), sodium (Na⁺), calcium (Ca²⁺) and chloride (Cl^-) were collected at three locations (Soc Trang city, Vinh Chau town and Nga Nam town) in May and November. Rainwater quality is compared with the National Technical Regulation on quality of clean water used for domestic purposes (QCVN 01-1:2018/BYT). The research results show that the quality of rainwater in the study area can be used for domestic purposes. Rainwater quality parameters have very low values ​​and are within the allowable limits of QCVN 01-1:2018/BYT. Rainwater in the study area can be used as an alternative water resources. However, it is necessary to have for collection, treatment before recommending to people for effective use so as to ensure health safety. The study provides important information on rainwater quality in Soc Trang province for rainwater quality planning and management.