Efficient antibacterial bathtub

The utility model discloses an efficient antibacterial bathtub, and relates to the field of bathroom equipment, the efficient antibacterial bathtub comprises an outer tub and an inner tub, the outer tub is provided with a mounting cavity, the mounting cavity penetrates through the outer tub in the vertical direction, the inner tub is arranged in the mounting cavity, the inner tub covers an upward opening of the mounting cavity in the vertical direction, a water storage cavity is formed in the inner tub, and a water outlet is formed in the bottom of the water storage cavity; the bathtub is characterized in that a limiting convex ring is arranged on the upper end face of the outer tub body and surrounds the inner tub body to limit movement of the inner tub body, and the inner tub body is gradually expanded in the direction away from the bottom of the water storage cavity along the lower water opening, so that water flow flows into the water storage cavity along the inner wall of the water storage cavity, the pr