The invention belongs to the field of livestock breeding welfare facilities, and particularly relates to a welfare toy for a pig. The welfare toy comprises a toy body which is in a calabash shape, the diameter of the upper portion of the toy body is smaller than that of the lower portion of the toy body, the upper portion is communicated with an inner cavity of the lower portion, a balance weight device is arranged at the bottom of the inner cavity of the lower portion, a storage battery, a stand column and a music mainboard are arranged on the balance weight device, an LED color change lamp is fixedly arranged at the upper end of the stand column, the LED color change lamp is connected with the storage battery through a first power supply line, and a first vibrating switch is arranged on the first power supply line. The music mainboard is connected with the storage battery through a second power supply line, a second vibrating switch is arranged on the second power supply line, the music mainboard is connected with a loudspeaker through a music output line, and the loudspeaker is arranged on the inner wall of the upper portion of the calabash shape. A power socket is formed in the lower portion of the calabash shape. The toy is easy to place and take out, production management personnel can move in a colony house conveniently, the life of swinery is enriched, production stress is reduced, welfare breeding is improved, and economic benefits are created.