Convenient logistics bar code identification instrument

The utility model discloses a convenient logistics bar code identification instrument, which comprises an identification device body and a mounting rack, the identification device body is mounted on the front surface of the mounting rack, and a bidirectional screw rod which is driven to rotate by a first rotating handle is arranged in the mounting rack; the first rotating handle is rotated to drive the bidirectional lead screw to rotate, the threaded blocks on the two sides of the bidirectional lead screw are made to move, the supporting plate and the clamping and fixing mechanism are adjusted to proper positions according to the width of the logistics conveying table, and then the installation frame is installed on the logistics conveying table through the clamping and fixing mechanism. In addition, the threaded supporting rods extend out or retract by rotating the threaded supporting pipes, the supporting plates and the mounting frames are adjusted to proper heights according to actual use requirements, and