The invention relates to a power distribution network assessment technology, in particular to a power distribution network comprehensive assessment and analysis method based on multi-source data analysis. The power distribution network comprehensive assessment and analysis method solves the problems that subjective randomness is high and assessment is difficult to quantify of the existing power distribution network assessment technology. The power distribution network comprehensive assessment and analysis method based on multi-source data analysis is implemented by adopting the steps of: 1) confirming a region to be assessed; 2) regarding an assessment criterion of an index as a threshold value according to basic data of a power distribution network within the region to be assessed, calculating a numerical value of the index, and calculating a score of the index according to the numerical value of the index and a scoring formula of the index; 3) and assessing operation level and power supply capacity of the power distribution network within the region to be assessed according to the score of the index and a weight coefficient of the index, and finding out a weak link of the power distribution network through analyzing an assessment result. The power distribution network comprehensive assessment and analysis method is applicable to the assessment of the power distribution network.