Abstract: Aiming at the planning problem about wind power-P2G and gas heating multi-energy coupling system（WPP2G＆GHMECS）,this paper put forward a method about a multi-energy coupling system planning analysis method in the full life cycle.Firstly,state the integration scheme of multi-energy coupling system based on P2G. Secondly,the net profit of the multi-energy coupling system is taken as the goal,the system equipment selection model and the life cycle economic planning model are established based on the maximum consumption of wind power and the stable operation of WP-P2G ＆ GHMECS. Taking the multi-energy coupling system’s capital recovery period and full life cycle net profit as indicators,economic evaluation of the system. Finally,the economic planning model established in this paper is simulated with a wind farm and P2G station as the background. Finally,the economic planning model established in this paper is simulated with a wind farm and P2G station as the background. The changing rule of system economics under the condition of different wind power grid-connected ratios and non-electrical energy consumption ratios are further analyzed.