The invention discloses a closed and integrated frostproof heat source tower, which comprises a tower body, wherein an outer fin air source heat exchange system, a fin inner tube liquid heat exchange system and a wet heat source condensed water separator are arranged on the tower body. Under the weather conditions of 'low temperature and high humidity' in winter and 'high temperature and high humidity' in summer, the closed and integrated frostproof heat source tower can circularly and efficiently absorb cold and heat sources in the air in a closed way, has a wet heat source condensed water separator, overcomes shortcomings of the conventional devices, avoids directly discharging a small amount of diluted solution and polluting water environment, realizes the optimal practical matching ofdevices, performs efficient, economic, reliable and stable operation, and is environmentally-friendly in discharge and wide in application range.