A trampoline has a bed. The bed is made of a sheet of fabric having an exterior periphery. A frame includes legs supporting the frame from the ground. A plurality of springs attach the bed to the frame. A light sound module is suspended under the bed. The light sound module includes a light emitting element mounted on a rotation rod. The rotation rod is mounted on a rotation axis, and the rotation rod is driven to rotate by a motor. A plurality of elastic cords has a length, namely a first elastic cord, a second elastic cord, and a third elastic cord.