The invention discloses a special air conditioner capable of humidifying air for indoor fresh-frozen food. The special air conditioner comprises an air conditioner base and a cold air outlet. An air conditioner protection frame is arranged above the air conditioner base. A vinegar water discharging opening is formed in the lower left side of the air conditioner protection frame, and a vinegar water inlet opening is formed in the lower right side of the air conditioner protection frame. An indoor temperature sensor is arranged above the air conditioner protection frame. A motor supporting table is arranged in the air conditioner protection frame. The special air conditioner is scientific and reasonable in structure and safe and convenient to use, a humidifier is arranged so that indoor air can be humidified through the air conditioner, and food preservation is facilitated; and meanwhile a vinegar water pipe is also arranged so that water mist sprayed by the humidifier can be acid and is sprayed into air to have a sterilization and disinfection effect, the problem that no humidifier is arranged, consequently, indoor air is relatively dry, and food preservation is affected is solved, the performance of the air conditioner is improved, and the food preservation effect is also improved.