According to the structural and functional characteristics of military communication network（MCN）

through constructing the military communication supernetwork（MCSN） description model

the concept of adjacent matrix of su-pernetwork

correlation matrix of classified nodes

type assortativity coefficient

and the definitions of supernetwork mo-tif

core and the entropy of the motif were introduced.Then regarding motifs as basic construct modules of MCSN

the supernetwork motif entropy（SNME） was proposed as a complexity measure of MCN.Finally

by taking the complexity measuring steps of a naval vessels fleet communication supernetwork structure which was discussed in detail as an ex-ample

the computing results of SNME were compared with the present complexity measures

and it was demonstrated that SNME could measure the functional complexity of network when its structural complexity was determined.