In the field of meteorological observation,theodolite is commonly used to track the wind drifting hydrogen balloon to realize the detection of wind direction and speed at all heights.When only a single theodolite is used,there are usually some errors,which mainly come from two aspects:one is limited by the low reliability of the detection data and the change of the speed of the hydrogen balloon,so the wind obtained has a large error；second,the hydrogen balloon itself has a certain inertia and drag force,so that it cannot be used as a good tracer of wind field,and the observed speed can’t directly represent the wind speed.Based on the principle of wind field observation with a single theodolite,a multi theodolite location method(Multi Theodolite Location Method,MTLM)to achieve accurate locating of the hydrogen balloon is proposed in this paper.Firstly,the altitude and azimuth angles information obtained by theodolite cooperative detection of hydrogen balloon are used to obtain the accurate trajectory and velocity information through the corresponding coordinate transformation and least square algorithm.Then,the motion equation of the hydrogen balloon is analyzed,and the velocity of the background wind field is retrieved from the velocity of the hydrogen balloon.In the simulation,the root mean square error is less than 2 m,and this method can improve by more than 80% and 90% in horizontal and vertical velocity retrieval respectively.In the field experiment,this method can improve the accuracy of wind direction and velocity estimates by more than 86% and 66% compared with the traditional single theodolite method.The MTLM method has better performances in the acquisition of high precision wind speed.