Abstract: When a light goes over through the surface of a star,there will be a deflection angle in two kinds of results. One is derived from Newton＇s gravitation theory, and the other is derived from Einstein＇s theory of general relativity. The latter is twice of the former. As for the Sun,the nearest star to the human,the numerical results are 0. 875＂ and 1.75＂. Here is the computing progress in detail. It is the due time to proof-test the inclusion when a solar eclipse is appearing. By far all the experimental information is in agreement with the general relativity.

Key words: gravitation mass, general relativity, deflection angle, solar eclipse.