The invention discloses a cold-hot air drying chamber. The drying chamber comprises a drying room. An air pipeline and a steam pipe are communicated with the drying room through the fan; radiation fins are arranged on the air pipeline; a first air-duct gate valve is arranged between the air pipeline and the fan; the air pipeline is communicated with a dehumidifier; a third air-duct gate valve is arranged between the air pipeline and the dehumidifier; a cooling tower is connected with a compressor which is connected with a condenser arranged on the air pipeline; and a fourth air-duct gate valve and a second air-duct gate valve are also arranged on the air pipeline. On the basis of a cold air drying system, the cold-hot air drying chamber is provided with a hot air supply system, realizes the random regulation of the cold air and the hot air by regulating the gate valves according to the requirements of different dying processes, realizes the use of the cold air and the hot air in the same drying chamber and reduces the occupied area and energy consumption for drying.