This paper presents the theoretical computation of the air flow of the low-speed wind tunned and wing sections.The Bernoulli energy equation of air flow of theaxis fluid wind tunnel is estabished.Based on the Vanes pale theory of the axis windmechine and relatiuely movement air flow equation

we found the total pressure of thefluid pass through wing sections.Appling to the characteristic curve of wing model

theparameter of air kinetics of the vanes is obtained Through a series of experiments con-ducted on wind tunnel

the resistanca coefficiends of the air fluid has been found.By ap-plying above aquations and experimental data

the total pressure

flow and power effi-ciency of the wind tunnel are calculated here;and they almost coincide.The paperpoints out how the fixing angle of the wing sections can greatly influence the kineties pa-rameters and power efficiency of the wind mechine in the wind tunnel.Some examplesare presented.