Objective Based on Zhangjiagang Hospital Affiliated to Soochow University's mobile pharmacist workstation,design and construct an anti-tumor drug adverse reaction risk warning module.Methods A monitoring drug catalog and a knowledge base for adverse reactions of anti-tumor drugs was established.Based on the intelligent management system for rational drug use on mobile pharmacist workstations,an anti-tumor drug adverse reaction risk warning module was added.Laboratory data and disease course descriptions were quickly and accurately captured,and abnormal indicators and issue reminders to clinical pharmacist work stations were identified.Results Implanting a risk warning module for adverse reactions of anti-tumor drugs in mobile pharmacist workstations solved the drawbacks of heavy workload,high professional requirements,and easy omission in monitoring adverse reactions of clinical pharmacists.It helped clinical physicians and nursing staff to timely obtain patient adverse reaction information,so as to closely carry out clinical observation and follow-up.Conclusion The anti-tumor drug adverse reaction risk warning module established helps to improve the ability of quickly responding.Thus，it has clinical promotion value.