: Suturing is an essential surgical skill for clinical residents. However, acquiring on-the-job training and practice for this skill is becoming dif cult due to the growing awareness of patients rights and safety. Thus, training clinicians get most of their suturing practice on simulators that use artificial compounds such as urethane that generally do not adequately represent real-life tactile sensation. Since 2011, we have therefore conducted an annual surgical skill-up seminar using swine skin, stomach, intestine, and blood vessels for clinical residents of Showa University Northern Yokohama Hospital. This seminar is held on an autumn Saturday afternoon at Terumo Medical Pranex in Nakai-cho, Ashigarakami-gun, Kanagawa, in collaboration with the Department of Medical Education, Digestive Disease Center and other surgical departments. We have thus far trained 92 participants 52 clinical residents and 40 surgical physicians in total in the following areas : skin suturing, tracheotomy, laparoscopic cholecystectomy, organ anastomosis stomach to small intestine , and vascular anastomosis. A post-practice unsigned questionnaire revealed an af rmative self-assessment rating of approximately 95% regarding the seminar contents. Most participants were satis ed with the group setting, but not satis ed with the 3.5-hour training time. Although hosting this wetlab training seminar using biological models requires a signi cant budget and manpower, it has successfully provided a valuable learning opportunity on basic surgical skills for clinical residents.