A terminal connection structure which enables miniaturization and reliable connection of terminal fittings to each other is provided. A terminal connection structure 1 includes first terminal fittings 5 connected to a motor 7, second terminal fittings 22 connected to an inverter, and a clip terminal. The first terminal fittings 5 and the second terminal fittings 22 respectively includes electrical contact portions 8 and 27 formed in a band plate shape and superimposed on each other. The clip terminal includes a pair of contact pieces sandwiching the electrical contact portions 8 and 27 where the clip terminals are superimposed on each other and an urging connection portion 36 continued from a pair of the contact pieces 35, and urging the pair of the contact pieces 35 between which the electrical contact portions 8 and 27 are sandwiched, in a direction to approach each other. The clip terminal is caused to approach the electrical contact portions 8 and 27 along a crossing direction with respect to the longitudinal direction of the electrical contact portions 8 and 27 superimposed on each other, and sandwiches the electrical contact portions 8 and 27 superimposed on each other, between a pair of the contact pieces 35.