In this new era，understanding grassroots public cultural requirements and improving of the supply of public cultural products are of great necessity for developing grassroots public cultural service and meeting people’s needs for a better life. Chongqing City Mass Art Museum went deep into the grassroots and grasped the current situation of the supply of grassroots public cultural products as well as the demands of grassroots by on-the-spot investigation. Investigators found out t the supply of grassroots public cultural products was unbalanced and inadequate and put forward some solutions including expanding the total demand and improving the quality of supply system，strengthening the construction of grassroots public cultural team，establishing the expression mechanism of the masses’ need，speeding up the construction of the general and branch libraries of cultural libraries and guiding the masses to carry out cultural activities independently，etc.