To obtain a joint structure between a footing and steel pipe piles capable of compacting the size of the footing, increasing the strength of the lower part of the footing, being efficiently resisted against seismic force and, at the same time, having the excellence in economical efficiency.

For the joint structure for connecting the footing to the steel pipe piles through joint steel pipes 21 provided between both of footing and steel pipe piles 5, the upper end sides and the lower end sides of the joint steel pipes 5 are respectively inserted into the lower end of the footing 3 and the insides of the upper ends of the steel pipe piles 5 by specific length, and both of them are connected in a state to make gaps between the footing 3 and the steel pipe piles 5.