Abstract: A potty for toilet training has a base with a hollow space, a seat with a big hole in its middle and mounted on the base, and receptacle received in the hollow space. Child's condition detecting circuit detects a first condition when a child sits on the seat and begins to relieve himself or herself, and a second condition when he or she rises from the seat. Responding to a result of the first condition, a trigger signal generating circuit generates a trigger signal and stops generation of the trigger signal in response to a result of the second condition. Responding to the trigger signal, a sound/melody generating circuit informs parents that their child begins to relieve himself or herself, generates a natural sound to entertain him or her during evacuation, informs the parents that their child has risen from the seat after stool in response to the stop of the trigger signal, and generates a congratulatory melody or voice message.