The invention relates to a method for arranging reservoirs, in particular to a method for arranging the reservoirs in an indirect cooling tower. The method aims to reduce investment and save the floor space according to the specific engineering requirements. According to the technical scheme, the reservoirs with different functions are sequentially arranged in the natural-ventilation indirect air-cooling tower from small volumes to large volumes, the reservoir with the smallest volume is arranged to be rectangular, the other reservoirs are respectively arranged to be of an L shape, and all the reservoirs are combined to be rectangular and are respectively provided with a water inlet pipe and a water outlet pipe. According to different engineering environments, the reservoirs with different functions are arranged in a partition mode, so that overall land occupation is the most reasonable, the reservoirs can be combined to be of a regular rectangle shape according to the needed volume, the space in the cooling tower can be effectively utilized, influence on other facilities is reduced, and the occupied area of a factory is reduced.