The invention relates to an industrial wireless network deterministic scheduling method supporting transmission delay optimization, and belongs to the technical field of industrial wireless networks.For a small-scale network, a branch and bound method based on link conflict classification is adopted; the method is an optimal algorithm; due to release-state link classification, pruning condition judgment on an effective link subset is carried out; continuous searching is carried out in a solution space tree; when the network has a feasible solution, a scheduling solution satisfying deterministic demands can be searched through the algorithm; for a large-scale network, a heuristic scheduling algorithm based on maximum parallel transmission is adopted; and, due to combined scheduling on thelink conflict degree and the loose degree, the scheduling solution can be obtained in a relatively short time. According to the scheduling method provided in the invention, on the premise that the deterministic transmission demands of a data flow are satisfied, the network average transmission delay also can be reduced; and the overall communication performance of the network is improved.