Mobile phone two-way endoscope design, relying on the mobile phone as a display terminal, lightweight to achieve professional-level non-destructive testing. The precision two-way steering snake bone probe can flexibly swing to detect the dead angle of the cavity and get rid of the fixed angle of view. The probe rod is flexible, resistant to pulling, reliable in protection, and suitable for complex working conditions such as oil pollution and humidity. The front high-definition lens optimizes optical adjustment, suppresses light and noise reduction, has clear details, and supports real-time preview, photographing and video archiving. Plug and play, no bulky host, mobile phone can be directly connected to quickly get started, taking into account portability and professional performance. The compact body is convenient to carry with the car and tool kit, suitable for auto repair, pipeline, mold, home appliance maintenance and other scenes. With mobile phone ecological empowerment detection tools, reduce procurement costs, taking into account ease of use and practicality, so that precision endoscopic detection can be carried out anytime and anywhere.