The invention provides a resolving algorithm of a mine ventilation network. The resolving algorithm of the mine ventilation network includes the steps that S1, according to a built ventilation network map comprising N branches and J nodes, the ventilation network and ventilation network data are initialized; S2, the N branches are classified into common roadways, fan roadways and fixed air amount roadways, ranked in an ascending order according to air resistance values and then stored; S3, a minimum generation tree is built, independent loops are divided in a classification mode according to the types of residual tree branches, the number of the independent loops is M=N-J+1, and the number of loops needing iteration is IterM; S4, all the loops needing iteration are traversed, the iteration accuracy of each loop needing iteration is judged, if the iteration accuracies of all the loops needing iteration exceed a preset iteration accuracy, iteration is finished, otherwise the air amount iteration value of each loop needing iteration is calculated, and air amount correction is carried out on each branch in each loop needing iteration iteratively. The resolving algorithm enables the air amount of the whole network to be automatically distributed and balanced.