The Different Effectiveness of Single Acupoint（PC6 or CV12) vs Matching Acupoints(PC6 and CV12) in Chemotherapy-induced Nausea and Vomiting

Inclusion Criteria: 1. Be diagnosed as cancer and need to accept chemotherapy. 2. The score of Karnofsky ≥70 3. Patients of either gender and older than 18 years 4. Patients receiving chemotherapy both outpatients and inpatients 5. Patients receiving chemotherapy either the first or multiple cycle, but the patient will be taken in only one time 6. To receive chemotherapy containing cisplatin(DDP≥75mg/m2) or joint chemotherapy programmes of Anthracyclines(Adriamycin≥40mg/m2 or epirubicin≥60mg/m2) 7. Life expectancy≥ 6 months 8. Willing to participate in the study and be randomized into one of the four study groups. Exclusion Criteria: 1. To receive radiotherapy and chemotherapy 2. Gastrointestinal tumors 3. Patients with serious liver disease or abnormal hepatorenal function (AST,ACT, and TBIL are 3 times more than normal, BUN and Cr are 2 times more than normal) 4. Presence of cardiac pacemaker 5. Active skin infection 6. Nausea and/or vomiting resulting from opioids or metabolic imbalance (electrolyte disturbances) 7. Patients unable to provide self-care or communication 8. Nausea and/or vomiting resulting from mechanical risk factors (i.e., intestinal obstruction) 9. Brain metastases 10. Women in pregnant and lactating period