Clinic-of-hospital-is-the-place-of-receiving-patients-to-make-general-medicine-and-emergency-handling-which-patients-contact-with-earliest-and-most.-The-hidden-troubles-in-security-of-public-area-of-outpatient-service-concern-the-image-and-status-of-hospital-and-the-whole-public-health-welfare-undertaking.-So-the-medical-guidance-assistant-plays-the-most-direct-and-irreplaceable-role-of-approaching-the-potential-risk-of-public-area-of-clinic.