The invention discloses a resonance sound box including a housing and a resonance loudspeaker and a circuit board fixed in the housing. The housing is provided with a loudspeaker groove used for accommodating the resonance loudspeaker. The opening of the loudspeaker groove is disposed in the bottom of the housing. A cylinder-shaped cavity is formed at the surrounding of the loudspeaker groove and is defined by the housing. The housing is provided with extending edges along the opening of the loudspeaker groove. Two opposite extending edges are provided with turnovers, so that arc-shaped structures are formed. A through hole is arranged in the outer wall of the loudspeaker groove at a position adjacent to one of the turnovers. The circuit board is connected with the resonance loudspeaker electrically through the through hole. According to the invention, the resonance sound box is compact in integral structure, small in size and convenient to carry and use.