Automatic horizontal air support system

The invention discloses an automatic horizontal air supporting system, and relates to an air supporting structure for precision mechanical equipment. The invention aims to provide the automatic horizontal air supporting system which can automatically supplement air and is good in supporting stability. The automatic horizontal air supporting system comprises an air floating body, an upper cavity and a lower cavity are formed in the air floating body, the lower cavity is communicated with the upper cavity and an external air source, an air bag is arranged on the air floating body, a leather cavity fixing piece is arranged on the air bag, a conical barrel is arranged below the leather cavity fixing piece, and the conical barrel is located in the upper cavity below the air bag. An air bag upper-layer fixing piece is arranged above the air bag and connected with a connecting rod, a tip is arranged on the bottom face of the connecting rod, a conical face supporting pad is placed in a circular groove in the bottom f