The utility model discloses a fire hydrant with a flow choking structure. The hydrant comprises a hydrant body, a hydrant cover, a valve body and a valve clack, the valve clack is screwed at the lowerend of the lower valve rod; the lower valve rod is connected with an upper valve rod through a connecting rod; the upper valve rod is rotationally mounted in the hydrant cover; a water outlet connector and a blank cap are arranged at the upper part of the hydrant body; the water outlet end of the valve body is hermetically connected with the hydrant body flange plate through the valve body flangeplate; a flow choking structure is arranged between the hydrant body flange plate and the valve body flange plate; the flow choking structure comprises a sealing element and a sealing seat; the sealing seat is fixedly installed on the inner wall of the valve body flange plate and sleeved with an upper sealing piece and a lower sealing piece which are in sealing contact with the inner hole wall ofthe hydrant body flange plate and the inner wall of the valve body outlet section respectively, the front face of the valve clack is matched with the sealing face of the valve body water inlet section through a valve clack sealing gasket, and the back face of the valve clack is in corresponding choked flow sealing fit. When the hydrant body of the fire hydrant is knocked open, the fire hydrant can also play a role in choking flow, and the situation of water column gushing is prevented.