Anti-falling high-air-tightness sliding door/window

The invention discloses an anti-falling high-air-tightness sliding door/window. The anti-falling high-air-tightness sliding door/window is characterized in that a moving groove is formed in the upperportion of an outer frame body, a locking column is arranged in the moving groove through a moving plate, an anti-falling mechanism is arranged in the outer frame body, inner frame bodies are symmetrically arranged in the outer frame body, first inclined plane rubber strips are vertically arranged between the two sides of the inner frame bodies and the outer frame body, second inclined plane rubber strips are transversely arranged below the positions between the inner frame bodies, lock catches are arranged on the inner frame bodies, and adjusting sealing mechanisms are arranged at the upper ends and the lower ends of the inner frame bodies. According to the anti-falling high-air-tightness sliding door/window, the damage and loss caused by falling of the inner frame bodies descending by acertain distance can be av