Objective To study the correlation of TCM syndrome and life span in patients with colon cancer.Methods The complete data of 780 patients with colon c ancer were collected and initial database was established.The patients were dif ferentiated into different TCM syndrome and followed up by clinic and telephone.The correlation of TCM syndrome and life span was analyzed.Re sults The freque ncy of TCM syndrome in 780 patients was spleen deficiency syndrome

qi deficiency synd rome

yin deficiency syndrome

blood deficiency syndrome

phlegm-damp syndrome

heat t oxin syndrome

qi stagnation syndrome

yang deficiency syndrome and blood stasis sy ndrome in order.487 cases were followed up.The life span of patients with yin deficiency syndrome was shorter than those without yin deficiency syndrome（P<0.0 5）.T he life span of patients with simple qi deficiency syndrome was longer than those wit h non-simple qi deficiency syndrome（P<0.05）.There was no significant differen ce in the life span between patients with simple spleen deficiency syndrome and those with non-simple spleen deficiency syndrome（P>0.05）.Conclusion The prognosis of colon can cer patients with yin deficiency syndrome is poor

but the prognosis of those with simple qi deficiency syndrome is better.Yin deficiency syndrome and simple qi deficiency syn drome could be considered as the prognosis factor of colon cancer.