The invention discloses a novel physics-based satellite positioning simulation method. Through a star map of a navigation satellite, the position of the satellite is simulated; and a formula solutionof satellite positioning point offset is worked out according to the electromagnetic wave characteristic of the satellite emitting a positioning signal and the electromagnetic wave absorption characteristic of a shielding material in the environment. According to the method in the invention, the satellite positioning point offset phenomenon can be found and reproduced through calculation; the process of receiving the calculation by a receiver from the satellite emitting signals is reduced by using the physics-based method. According to the method, the precision is guaranteed, and overlarge calculation amount is not increased for the satellite positioning algorithm.