This paper intends to investigate the ways to maintain sustainable china -europe block train operation. Then it makes an analysis of the current situation of China-Europe Block Trains, and points out it's fast, booming development. Meanwhile, the paper collects some data about container rate that causes the loss of operation parties. To deal with such challenge, China's provincial governments provide subsides to maintain operation; however, it is looking for solutions to the problem, in case the challenges are sustainable.It, also, has made some proposal for using empty return wagons and coantainer from Europe efficiently.