Preparation and application of vaccine for curing tumor in positive carcino-embryonic antigen

A fusion protein CEA-Hsp70L1 of human carcino-embryonic antigen and heat shock protein 70L1, the DNA sequence for coding it, the carrier containing the DNA sequence, the host cell containing said carrier, the process for preparing said fusion protein by genetic engineering, and the composition containing the fusion protein are disclosed. A process for preparing the therapeutic vaccine of CEA positive cancer is also disclosed.