The gravity base structure are divided into two categories, concrete caisson structure and gravity base, both of which need using high strength chemical paste for grouting in the installation process, in order to maintain the stability and security of the base structure in the later operation. Based on the structural characteristics and adaptability of the gravity base, the grouting technology of gravity base was investigated, as well as the construction steps of gravity base. The gravity basis structure generally require twice grouting for the safe and stable operation, the first grouting is between the ground and foundation, the second grouting is in the joints of the tower and foundation.