The present invention discloses a power network graphic multi-tense and multi-level distributed storage method based on a Mongo database. The method is characterized by comprising:1, building a graphic version management mechanism based on multiple tenses and multiple levels, building corresponding tense sets that comprise a planning design state, a construction state and a running state according to three processes of planning design, construction and running of a power network, and carrying out rolling and updating of a graphic version on reference versions, wherein each tense set respectively has one reference version as well as time and personnel dimensions and in every time dimension, modification or individual display is carried out based on the reference version; and 2, building storage information of record fragments based on the Mongo database, performing fragmented storage on a data set according to a data range, and simultaneously, building a multi-node distributed storage architecture to complete distributed storage of corresponding data. According to the power network graphic multi-tense and multi-level distributed storage method based on the Mongo database, response to the requirements of different business personnel for application of related power network graphics is fast and efficiently implemented and improvement on graphic response efficiency is realized.