The invention relates to a two-dimensional code reader convenient to fix. The two-dimensional code reader comprises a two-dimensional code reader body (1), a protective shell (2), a power line (3), aUSB socket (4), a retaining ring (5), a fixing retaining ring (6), a supporting column (7), a second suction cup (8), a first suction cup (9), a fixing plate (10), an electric telescopic rod (11), a telescopic rod power supply (13), a telescopic rod button (14), a male buckle (15) and a female buckle (16). According to the buckle ring (5) provided by the invention, a two-dimensional code reader can be lifted by a single finger of an employee, so that the employee can conveniently carry one or more readers; The second sucker (8) provided by the invention can enable the reader to be fixed on a flat desktop, so that the position of the reader is prevented from moving due to the fact that the reader is touched by a customer or an employee in the using process, and the danger caused by pullinga power line is avoided.