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Wind from black hole accretion flow is a hot topic now,perhaps because wind is an important ingredient in the dynamics of accretion flow,and it also plays an important role in AGN feedback.In this talk,I will first briefly review the mechanism of wind production from a thin disk,then focus on the wind production from a hot accretion flow.Global numerical simulations to hot accretion flow have found that the mass accretion rate decreases inward.I will show that this is because of mass lost via winds,rather than because of convective motion of the flow.The wind is launched because of the combination of magnetocentrifugal force and gradient of gas and magnetic pressure.The Fermi bubbles detected in the Galactic center is perhaps inflated by winds from the hot accretion flow in Sgr A*.