The present invention relates to a vegetation system for water purification. The vegetation system for water purification according to one embodiment of the present invention can effectively enhance purification efficiency of wastewater using aquatic plants by compositely applying a water purification function using aquatic plants and an optical water purification function using UV rays. The vegetation system for water purification of the present invention includes a water tank body which has an opening on the top to store water, vegetation blocks, and a water purification tank which is installed at the bottom of the water tank main body, and includes a UV lamp.수생식물을 이용한 식물적 정수작용과, 자외선에 의한 광학적 정수작용을 복합적으로 적용할 수 있게 되어 수생식물을 이용한 오염수의 정화효율을 효과적으로 높일 수 있는 정수용 식생시스템을 개시한다.