The significance of the infant leg venipuncture model lies in providing a safe and highly realistic training platform for medical staff and nursing students to master the skill of infant venipuncture. Infants have small blood vessels and tender skin, making the operation difficult. In actual clinical practice, it is easy to cause vascular damage or operation failure. This model is designed based on the anatomical structure of an infant's legs, with clear venous distribution and realistic skin elasticity. It can simulate blood return and puncture resistance, allowing trainees to repeatedly practice the needle insertion Angle, depth and fixation techniques in a risk-free environment. By using the model, trainees can enhance their hand-eye coordination, operational accuracy and clinical confidence, while reducing the operational risks for real children patients. The model also facilitates teachers' observation and evaluation of operational effects, providing a quantitative basis for skills assessment. The application of the infant leg venipuncture model not only enhances the training efficiency but also provides a solid guarantee for the safety and success rate of infant venipuncture.