To provide a grip of a tool having an easy-to-grasp grip body and efficiently transmitting rotational torque to a core when the rotational torque is applied to the grip body, and a method of manufacturing the grip.

This grip of the tool includes a rigid core 2 that is formed in a long shape and fixed to a handle part 11 of the tool 1, and an elastic grip body 3 that is formed in a cylindrical shape and fixed to the outer periphery of the core 2. The grip body 3 includes a grip outer layer 31 forming an outer periphery, and an elastic layer 34 that is arranged inside the grip outer layer 31 and allows the grip outer layer 31 to be deformed when grasped. The core 2 includes projections 22 and 23 that project in the direction orthogonal to the longitudinal direction and are arranged along the longitudinal direction. The projections 22 and 23 are extended in the direction orthogonal to the longitudinal direction so that the tip parts 22a and 23a are exposed.