Sliding positioning hinge

The utility model discloses a sliding positioning hinge, which comprises a base frame and a support frame pivoted on the base frame. The base frame comprises sliding rail parts and a displacement part arranged on the sliding rail parts. The displacement part comprises a first pivoting part, at least one sliding part and at least one positioning raised part, wherein the sliding parts are connected to the sliding rail parts, and slide along a sliding path relative to the sliding rail parts; and the positioning raised parts are arranged on the sliding parts. Each sliding rail part comprises at least one positioning mechanism which is arranged on the sliding path of the positioning raised part. Each positioning mechanism comprises two clamping and pressing parts and an elastic component, wherein the clamping and pressing parts clamp and position the side edges of the raised parts; and the elastic component is connected with the two clamping and pressing parts to make the two clamping and pressing parts movably di