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On the basis of investigation on the recent 40-year climate resources over the Yellow River Delta, taking Dongying as a example, an analysis was made of the guidance role of wind direction in urban planning. The wind loads of different frequencies and heights were estimated by means of the statistical method. The coefficients of insolation interval and the meteorological parameters relevant to heating and ventilation were calculated. The results provide useful science reference for urban construction departments to utilize climate resources more effectively in urban planning and design.