The construction of public cultural service system has come into a new period of development.However,the grassroots public cultural activities,predominated by the national policy,have never been given all the attention they deserve.Based on fieldwork and interview methods,this paper investigates the situation of grassroots cultural station in W- City.The result shows that the construction of public cultural service system puts forwad a new demand to the functional positioning of the grassroots cultural station.However,the functions of grassroots cultural station deviate from public cultural services.The main reasons for deviation include needs of sub- district political achievements,pressure on sub- district cultural station from institutional reform and offside and default of the grassroots cultural administrative system.Consequently,this paper proposes several countermeasures on return of sub- district cultural station to public cultural service:to correct the sub- district itself is not enough,the most important point is to combine the sub- district with community together.