The present application relates to the technical field of rubber balls, specifically discloses a ball for competitions and toy games, wherein a power supply installation groove is arranged on the ball body, and a sealing plug for sealing the power supply installation groove is arranged on the power supply installation groove, in which a power supply module is arranged, the power supply module comprises a power supply and a power supply contact arranged at bottom of the power supply, wherein a flexible LED light strip is pasted on an inner side of the ball body in a ring shape, and the flexible LED light strip is provided with a light strip contact, wherein the light strip contact is arranged below the power installation groove. The flexible LED is attached to the inner side of the ball body in a ring shape, so that the ball body emits light more uniformly.