To provide a rescue floating spherical body to call in a rescue by floating on the seawater which can be folded to be small when the floating spherical body having simple structure is not used, and where a human can enter a hollow internal space and perform an emergency escape by being inflated when a tsunami is generated due to the earthquake.

The human b can enter the hollow internal space 2 of the rescue floating spherical body and the spherical body can be floated on the water surface 1. The hollow internal space 2 in such a state that the floating spherical body a is inflated has at least a space where at least one human b can enter, a door body 3 passing through the hollow internal space 2 is formed on a part of the outer peripheral surface part 5 of the floating spherical body a, and an end edge part 4 of the door body 3 is blocked by a hook-and-loop fastener 6 in a closed state of the door 3. A plurality of reinforcing plate materials 7 are installed on the outer peripheral surface part 5.