Objective: To investigate the suicide risk in the patients with malignant tumors and its influencing factors

and to provide theoretical and practical references for evaluation and prevention of suicide risk in patients with malignant tumors. Methods: A total of 355 patients with malignant tumors

who were hospitalized in the Affiliated Hospital of Southwest Medical University and the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University from August to October

2017

were enrolled by convenience sampling. The Cancer Suicide Risk Scale（CSRS） and Self-Rating Depression Scale（SDS） were distributed to those patients. The differences in scores between patients with different characteristics were analyzed by multiple linear regression. Results: The CSRS scores of patients with malignant tumors were between 5 and 70

with a mean score of 33.01 ± 14.276. The highest mean score was observed for negative emotion

followed by suicide motivation

suicide attitude

and suicide preparation（14.62 ± 8.23 vs 9.32 ± 3.86 vs 6.47 ± 3.85 vs 2.60 ± 2.55

P < 0.05）. According to the correlation analysis of SDS and CSRS scores

depression score was positively correlated with suicide risk score（r = 0.708

P < 0.001）. The results of multiple linear regression analysis revealed that the SDS score

age

disease symptoms

education level

and occupation were influencing factors for the CSRS score of a patient with malignant tumors（P < 0.05）. Conclusion: Suicide risk is high in patients with malignant tumors. In order to prevent suicide in patients

family members and medical staff should identify the high-risk factors for suicide with outdelay

and give them better support and help.