千古大运河水道运输经济而省力,但我国主要河流几乎是东西走向,很少有南北水道,这种自然水系严重地制约着全国各地交通往来。为了有利于国家的统一和社会经济文化的交流与发展,人们便设法人工开凿南北走向的河流,来解决水运。这种人工开凿的用于水运的河流叫运河。我国的运河从吴国开凿的邗沟开始,此后有战国时期魏国在中原地区开挖的鸿沟,三国时期曹魏在华北平原开 Throughout the ancient Grand Canal waterway transport economy and effort, but China’s main rivers are almost east-west direction, there are few South-North waterways, which seriously restrict the natural water traffic throughout the country. In order to facilitate the unification of the country and the exchange and development of socio-economic and cultural fields, people try to dig the river running north-south manually to solve the problem of water transport. This man-made river for water transport is called a canal. The canal of our country started from the ditch ditch dug by the Wu Kingdom, after that there was the gulf of the excavation of the Wei Kingdom in the Central Plains in the Warring States Period.