Abstract: objective: Discuss the connection at the thick of stomach with the background of malignant tumor. Methods 140 patients of the malignancy in the body except the stomach were studied, abdomen were all examed by CT scaning, female 59 cases, male 81 cases,110 cases were cureing by the treatment of chemistry. The original tumor was pulmonary cancer,liver cancer,colon cancer,galactophore cancer,vein sarcoma,small intestine (gastrointestinal), cervical cancer,et.al. Fasting in the morning, all taking eau douce 300ml~500ml before CT scaning. Conclusion study and analyzed 140 cases’thick of stomach with the background of chemistry, we finded the thickness of stomach is just relationship with the background of chemistry and the cureing by the treatment of chemistry.