The invention discloses a sound-array network self-positioning method based on assistance of a static sound source. The sound-array network self-positioning method realizes self positioning of unknown nodes in the sound array network by a static sound source as a bridge for connecting beacon nodes with unknown nodes by means of the assistance of the static sound source under the limited beacon nodes. The sound-array network self-positioning method disclosed by the invention has the advantages that under the condition of limited and sparse beacon nodes, by means of the assistance action of the static sound source, self positioning of the unknown nodes with high accuracy, low cost and high coverage rate is realized by utilizing DOA (Direction Of Arrival) measured among the nodes of the sound array network as well as between the nodes and the static sound source; and the sound-array network self-positioning method is especially applicable to large-scale sound-array network self-positioning scene with higher accuracy requirement and lower positioning cost.