The invention relates to a structure for correcting printing accuracy, comprising a plurality of imaging components, a transmission channel, and a linear image sensor. The plurality of imaging components are used to generate a plurality of imaging medias, and the plurality of imaging components are sequentially arranged. The transmission channel is used for passing the plurality of imaging medias. The linear image sensor is disposed on downstream of the plurality of imaging components. The plurality of imaging components respectively generate the plurality of imaging media for transmission on the transmission channel. The linear image sensor is used to detect the plurality of imaging medias respectively generated by the plurality of imaging components, to correct the printing accuracy. Also provided is a method of correcting printing accuracy.