The traditional grain transportation pattern in China, which is characterised as transporting grain produced in south to north, has been obviously replacd by a new pattern known as ‘transparting grain produced in north to south’. The analysis based on statistical materials shows that this change results from the movement of grain production centers from south to north. The causes which push the production centers to north are various, however, the food demand pressure, the technological advance and the economic system reform are the basic ones.