The invention discloses a petroleum exploitation oil tube inner wall cleaning machine which structurally comprises a cleaning device, a drive device, a shell, a slide rail, a slide handle and three trundles. The cleaning device is arranged on the side surface of the shell. The drive device is mounted in the shell. The cleaning device and the drive device are mechanically connected. The slide railis arranged on a shell side surface panel and penetrates through the shell side surface panel. The slide handle is movably mounted in the slide rail and matched with the slide rail. The three trundlesare mounted at the bottom of the shell in the form of a regular triangle structure. The trundles are mechanically connected with the shell. According to the cleaning machine, hot water is sprayed tothe inner wall of a petroleum pipeline through spraying units so as to soften oil dirt on the inner wall of the petroleum pipeline, a scraping unit can be used for scraping the oil dirt away conveniently, the cleaning speed for the oil dirt on the inner wall of the petroleum pipeline is increased, accordingly, the oil dirt on the inner wall of the petroleum pipeline is scraped away, and the cleaning effect is better.