In order to effectively solve serious network congestion, low data success transmission rate, high data redundancy rate and poor overall network performance in remote geographical area communications network, a new delay/disruption tolerant network (DTN) congestion control routing optimization algorithm is designed based on ant colony optimization mechanism considering the feature of sport regional about network node. Combined the algorithm with pheromone of ant colony optimization mechanism, multiple data transmission between the source and destination nodes is carried out. In the data information transmission direction, average transit hops of network nodes are obtained, and the transit values of network nodes are assessed. Inspired values of ant colony optimization mechanism are referenced. Inspired values of network nodes and the remaining storage capacity of network nodes are associated. Network nodes are combined as evaluation parameters of transit nodes, and the transmission task is completed by selecting network nodes with the largest evaluation parameters. Experiments show that the network congestion is effectively controlled by the algorithm, data success transmission rate is improved, and data redundancy rate is also reduced effectively. The overall network performances are further optimized.