The Yemen crisis is a unique window to understand the situation of the Middle East. The popular uprisings of the Arab Spring ignited the Yemen crisis，which developed into a bloody civil war. At the end of 2017，the former Yemeni president Ali Abdullah Saleh，who ruled in Yemen for 33 years was killed by Houthis. It not only caused pro-Houthi forces and anti-Houthi group internal divisions，but also triggered a new round of fierce military conflicts between the opposing sides. The new UN Special Envoy to Yemen Martin Griffiths faces an uphill battle to bring belligerent parties to the negotiating table. The civil war perpetuates the humanitarian catastrophe that allow terrorist groups to flourish. To end the conflict and create a lasting peace，the political negotiation is crucial. It is necessary to draw lessons from the previous peace talks，and pay attention to the role of local actors.