Abstract: Wind-induced along-wind dynamic interference effects of tall buildings are studied by a series of wind tunnel tests.Interference excitations of upwind buildings with various heights in different upwind terrains are considered.Interference characteristics are investigated by artificial neural network(ANN) method and correlation analysis.The results show that two upstream buildings cause more adverse dynamic effects on the downstream building than a single upstream building does.Significant correlations are found in the distributions of the envelope interference factors of different configurations and upwind terrains,a series of relevant regression equations are therefore proposed to simplify the complexity of the multi-parameter wind-induced interference effects among three tall buildings.Recommendations about the along-wind dynamic interference effects on three tall buildings are also given as the reference for improving the design code of wind loads.