The invention discloses a manufacturing method of a flexible soft copper/aluminum strip heat tube with multiple fibers distributed in ordered arrays. The manufacturing method comprises the following steps: placing interlaced fiber capillary cores on a long and thin copper plate or aluminum plate, folding in half, pressing, then closely fixing the fiber capillary cores to the inner wall of the folded copper plate or aluminum plate in a sintering or welding way, and performing seam welding on the folded edges to form a heat tube shell of which the two ends are opened and fixedly provided with the fiber capillary cores; sealing one end of the heat tube shell of which the two ends are opened and fixedly provided with the fiber capillary cores in a seam welding way, vacuumizing the other end of the heat tube shell by using a vacuum pouring machine, pouring a working substance, mechanically clamping a seal head, welding and sealing to obtain the flexible soft copper/aluminum strip heat tube with multiple fibers distributed in ordered arrays. The manufacturing method disclosed by the invention is simple in process, can realize large-scale flow line production of a single heat tube or a plurality of heat tubes by performing limited or unlimited continuous seam welding on the folded edges, so the manufacturing method is applicable to industrial production.