This study aims to establish a novel animal model and lay the foundation for the research on the mechanism of hypothermic machine perfusion (MP). Based on different left renal warm ischemia 25min, 35min and 45min, they are grouped into MP 25min, cold storage (CS) 25min, MP 35min, CS 35min, MP 45min and CS45min (n=5), followed by reperfusion for 1 h. Perform in vivo hypothermic preservation (MP or CS) for 4 hrs. After 24 hrs reperfusion, the specimens are collected. Results showed that postoperative 24-hour survival rates of 25 min group were 100%, while survival time of 45min group were 0% (p>0.05). In conclusion, an in vivo rabbit model for MP is a novel, effective and stable animal model. MP improves kidney viability in rabbits below 35 minutes' warm ischemia, which is invalid after 45 minutes' warm ischemia.