An installation structure of a faucet body and a bolt shaft comprises the faucet body, a bolt shaft base assembly, the bolt shaft and a gland; a zinc alloy material is a material of the faucet body which forms a vertical channel and an installing channel; an annular blocking edge with a screw hole is formed on the inner wall of the installing channel; the bolt shaft base assembly and the faucet body are arranged in a split manner; the bolt shaft base assembly comprises a bolt shaft base located in the vertical channel and a sleeve arranged in the installing channel in a sleeved manner; an annular protruding edge making contact with the annular blocking edge in an adjusting-against manner and provided with a penetrating hole is formed on the outer wall of the sleeve; a screw penetrates the penetrating hole and then is in threaded connection with the screw hole; the gland and the sleeve are in threaded connection; and the bolt shaft is arranged in the sleeve in a sleeved manner and is located between the gland and the bolt shaft base. According to the installation structure of the faucet body and the bolt shaft, the bolt shaft base assembly and the faucet body are arranged in the split manner, the zinc alloy material is adopted for the faucet body, and therefore the material cost of the faucet body can be reduced while the water quality and the strength of the faucet body are guaranteed by the installation structure of the faucet body and the bolt shaft.