The rule of in-flight hose-drogue movement is an important prerequisite in analyzing the aircraft's flying qualities and control law, and the calculation of the static catenary shape of hose is the basis of studying the hose-drogue movement. In this paper, a method for determination of hose static catenary is presented. The tanker flow-field is modeled by using an array of distributed bound and free vortices. The refueling hose flow-field model、hose pneumatic model and drogue parachute pneumatic model are established respectively. In the method, the trailing refueling hose and drogue are modeled by using an array of discrete point mass nodes which represents the physical properties of the hose and drogue. Hose static catenary shapes at various speeds and heights are calculated and discussed，and the results coincide with the facts.