The invention relates to a safety interlocking method of a continuous wind tunnel cooling system. A cooling control system analyzes a signal which needs monitoring, a safety risk of a wind tunnel andequipment is determined according to the signal, and safety interlocking protection is carried out on the wind tunnel and equipment. Safety interlocking content is comprehensive, reasonable and effectively, basis is provided for normal operation of the continuous wind tunnel cooling system and safety of the wind tunnel and equipment, danger of an abnormity signal is clear, the risk coefficient andsystem risk are determined according to signal values, the danger is quantified, an operator can know the danger of a present fault visually, basis is provided for control decision, and the wind tunnel runs more safely.