objective: to study the surface wind pressure of cooling tower under the condition of isolated tower and adjacent two towers. Method: wind tunnel test. Process: simultaneous pressure-measured tests on the rigid model, contrast the test results of isolated tower and adjacent two towers' rigid model. Results and analysis: when Twin Towers tandem, the front tower have a greater impact on the latter tower than the latter tower has for the front one; the effect of interference is important to the flow direction; Conclusion: In this paper, the wind pressure of cooling tower is studied by wind tunnel test method.