This four-way 720-degree steering industrial endoscope adopts a thick and tough industrial appearance, with a solid and stable texture, and is suitable for harsh industrial inspection scenarios. The probe supports four-way 720 ° full-angle steering, flexibly probes into complex cavities, and detects internal defects without dead angles. It is equipped with a detachable 5-inch high-definition large screen, the screen can be separated and used independently, and the observation mode is flexible and changeable, which is convenient for single person maintenance or multi-person collaborative review. The probe rod protection is wear-resistant, the lens optics are optimized, the imaging is clear, and it supports photographing and video recording and defect marking archiving. The key layout of the whole machine is atmospheric, the body is resistant to falling and building, has multiple protections, and is suitable for working conditions such as oil pollution and humidity. Modular design is convenient for maintenance and replacement of accessories, taking into account strong steering performance, large screen observation advantages and hard core industrial texture. It is a professional tool for non-destructive testing of high-end equipment.