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In view of the contradiction between urban construction and protection of architectural heritage, this paper analyzes the hidden dangers of wind and fire protection of architectural heritage from the perspective of wind environment impact of high-rise buildings. The wind environment simulation and fire simulation based on computational fluid dynamics are used to study the typical building heritage cases in Guangzhou. The wind environment indicators that affect the comfort, safety and fire development of the wind environment of the building heritage are explained, so as to form a strategy for evaluating the impact of wind environment of high-rise buildings on the protection of building heritage.