Accurate humidity control device for wine cabinet

The accurate humidity control device comprises a cabinet body, a partition plate and a humidity sensor are arranged in the cabinet body, the partition plate is provided with a drainage groove which is provided with an upward opening and is arranged in a downward sunken mode, the drainage groove is provided with a water outlet nozzle, the two sides of the water outlet nozzle are sunken downwards to form a water storage groove, and the humidity sensor is arranged in the water storage groove. A heater is arranged at the bottom of the partition plate and is arranged below the water storage tank; a drainage groove is formed in the cabinet body, a water outlet nozzle is arranged in the drainage groove, and condensate water in the cabinet body is collected through the drainage groove and discharged through the water outlet nozzle; the water storage tanks are arranged on the two sides of the water outlet nozzle, part of condensate water is collected through the water storage tanks, the heaters are arranged at the bot