Constrained by funding， distribution network planning is in general incapable of immediate implementation as a whole. The conception of reconstruction urgency degree is proposed for 10 kV feeder reconstruction to comprehensively analyze the situation of substandard medium voltage distribution network planning target. The advanced analytic hierarchy process（AHP） based on the decision making trial and evaluation laboratory（DEMATEL） method and cross reinforcement matrix method is used to calculate the urgency degree. Taking the maximum of the total feeder reconstruction urgency degree variation as the objective function and the total project investment as the constraints， the model is developed for distribution network reconstruction and optimization. An actual example shows that with this method maximum use of funds and effective arrangement of project reconstruction sequence can be made.