Abstract: An automatic measuring instrument data correction device and method related to the technical field of environmental measuring instrument are disclosed. The device includes a data reading and converting module obtaining readable data having time information and generated by the measuring instrument; an automatic data correction module comparing the preset standard spectrum with the readable data having time information, executing data correction according to a comparison result. Therefore, the measurement result, which is generated by the measuring instrument, can be corrected to greatly reduce labor cost and time cost, and further improve production efficiency.