With the promotion of the concept of"precision medicine",the application of the da Vinci surgical robot in surgical operations has attracted more and more attention.The robotic system consists of a surgeon's control platform,an image processing platform and a patient surgical platform,which can achieve highly precise and minimally invasive surgical operations.The patient surgical platform is its core component,which contains multiple robotic arms and tillers,which have functions such as rapid positioning,flexibility,and precise control to ensure the smooth progress of the surgery.Despite its significant technological advantages,the da Vinci surgical robot is a challenge for hospitals due to its high cost and complex maintenance requirements.It is necessary to improve the own repair and maintenance capacity of hospital.The composition principle of the da Vinci surgical robot's patient surgical platform was focally analyzed,with special emphasis on the structure and working principle of the tiller.The maintenance methods of common faults were explored through the analysis of specific failure cases of the patient surgical platform,to provide effective maintenance strategies for hospitals,reduce operating costs,and improve medical benefits.