Seismic profile noise elimination method and device based on Kirchhoff inverse migration

The invention provides a seismic section noise elimination method and device based on Kirchhoff inverse migration. The method comprises the following steps: manually picking up a noise event on a pre-stack time migration section according to a given migration speed; generating a corresponding shot gather record of the picked noise event by using Kirchhoff integral demigration processing; mapping the generated shot gather record into a source shot gather record, and eliminating a noise event based on FK transformation; and converting the shot gather record without the noise event into a pre-stack time migration profile by utilizing Kirchhoff integral positive migration processing. According to the seismic section noise elimination method provided by the invention, effective information in the section is not damaged, and a local blank band is prevented from being formed on the section, so that the noise event of the pre-stack time migration section is quickly and effectively eliminated on the premise of ensurin