Major drawback of diode laser array is its asymmetric beam quality, which can be improved by beam shaping. Parallel glass plate arrays are used in beam shaping for single emitter of diode laser array based on its beam displacement property, which can reduce power loss in slow axis and adjust beam quality with high efficiency in both axes. Validated experiment based on a short diode laser array with 12 emitters is carried out, and the results indicate that the beam shaping effect is according with the simulation, and the beam shaping efficiency is 93.62%.