The invention provides a reflow furnace temperature zone partitioning method and device as well as a computer readable storage medium. The method comprises the following steps: acquiring air temperatures in a reflow furnace and board test temperatures of a to-be-welded PCB in a reflow welding process; obtaining an air temperature variation curve of the reflow furnace according to the air temperatures, and obtaining a board test temperature variation curve of the PCB according to the board test temperatures; determining temperature zone anchor points of the reflow furnace according to the air temperature variation curve and the board test temperature variation curve, wherein the temperature zone anchor points are taken as demarcation points of a heating zone and a cooling zone of the reflowfurnace; and performing temperature zone partitioning on the heating zone of the reflow furnace according to the air temperature variation curve and the temperature zone anchor points. The scheme provided by the invention can precisely obtain temperature zone partitions, specific to an air temperature curve over time of the reflow furnace and a board test temperature curve over time, of the heating zone of the reflow furnace and then obtain temperature conditions of each temperature zone of the heating zone.