The invention discloses a global optimum optical tracker pose calculation method. According to the method, a traditional tracker pose calculation method is improved, a mathematical model based on a global optimization thought is used, a corresponding relation between space points and image points is used to construct a system of linear equations, it is not needed to calculate the pose of a tracker relative to a single base station or perform pose data fusion, and a global optimum pose of the tracker can be directly solved. Through the method, the quantity of base stations is not limited, information of corresponding points of all base stations is fully utilized (even if the quantity of the corresponding points of a certain base stations is not enough for independent calculation of the pose), and the minimum calculation condition of the pose of the tracker is greatly lowered (the threshold value of the quantity of the corresponding points is lowered from at least five groups of corresponding points of any base station to totally four groups of corresponding points of all the base stations); and besides, when multiple receivers establish connection with the tracker, a global optimum pose fusion result can be obtained, and the result is more precise and higher in robustness.