This paper aims to confirm the formation mechanism and the age of high metamorphism coal belt in the south of the North China plate. Considering the collison history of the North China plate and Yangtze plate, we analyze the distribution features of magmatic rock and coal rank. The coal seam belongs to the Shanxi Formation, lower Permian. Using the "gravity isostasy" principle and the theory of "paired metamorphic belt" proposed by Miyashiro, we construct the heat flow model to explainthe source of heat which caused the formation of high metamorphism coal belt and draw the following conclusions:1) Since the collision of the Yangtze plate and North China plate, there was a high-temperature and low-pressure belt in the foreland basin in the south of the North China plate, which promoted the coalification and led to formation of a high metamorphism belt; 2) According to the geological data and tectonic characteristics, the strike of high metamorphism coal belt was the same as the tectonics strike in the Indo-Chinese epoch, which is nearly east-west. Therefore, we speculate thatthe high metamorphism coal belt formed in the Indo-Chinese epoch. The magmatic rock in Yanshanian played an important role in the process of coal metamorphism in the south of the North China plate, but the coal metamorphism in Jincheng and Jiyuan areas was controlled by platecollision which formed the abnormal heat flow.

south of the North China plate  /  high metamorphism coal belt  /  plate collision  /  paired metamorphism belt