A multipoint cooperative working method for reliable communication in a wireless Ad hoc network communication system relates to the wireless Ad hoc network technical field. The invention solves the problem that information transmission reliability is poor as only one route is used for information transmission in the existing wireless communication process. The method includes that: a node requesting cooperative distance measurement broadcasts a cooperative distance measurement request; a destination node writes in the address thereof and the address of a downriver node thereof if needing cooperation; after obtaining successful signal interaction with the destination node and the downriver node of the destination node, the node requesting cooperative distance measurement obtains the distance with the destination node and the distance with the downriver node of the destination node by detecting the cooperative distance measurement request message and acknowledgement signal of the destination node and those of the downriver node of the destination node; and if the two distance values meet the requirement of being less than the corresponding reliable transmission domain radius, the node requesting cooperative distance measurement sends an acknowledge message to the destination node. The invention is applicable to emergency response and communication recovery process after disaster.