The invention relates to a dual-tower shock-cooling and sprinkling desulphurization purification integrated smoke purifying device, which comprises a smoke shock cooling tower and a desulphurization purifying device, and the dual-tower shock-cooling and sprinkling desulphurization purification integrated smoke purifying device is characterized in that the smoke shock cooling tower and the desulphurization purifying device are designed into an integrated device comprising a smoke shock cooling tower, a sprinkling desulphurization purifying tower, a cooling water tank and an alkali liquor box; the top of the cooling water tank and the top of the alkali liquor box are respectively and fixedly connected with the shock cooling tower and the sprinkling desulphurization purifying tower, the upper part of a smoke shock cooling tower body is provided with a smoke inlet and an air-liquid spray head which communicates compressed air and cooling water of the cooling water tank, the bottom of the smoke shock cooling tower body is provided with a water return port, the upper part of the sprinkling desulphurization purifying tower is provided with a smoke outlet and a sprinkling head which is communicated with alkali liquor of the alkali liquor box, a helical liquid deflector and a liquid return port are arranged on the bottom inside the sprinkling desulphurization purifying tower, and the bottom of the smoke shock cooling tower is communicated with a smoke inlet on the bottom of the helical liquid deflector through a connecting flue. The dual-tower shock-cooling and sprinkling desulphurization purification integrated smoke purifying device has beneficial effects of compact structure, small size, light weight, excellent shock cooling and sprinkling desulphurization purifying effect and capability of realizing clean production.