To address the spatial constraints in unmanned aerial vehicle target detection systems， a scheme for a multi-beam scanning passive Q-switched microchip array solid-state laser is proposed. This system utilizes a six-core semiconductor laser array to compactly pump a strip-shaped Nd：YAG/Cr⁴⁺：YAG bonded crystal. At a pumping power of 1.6 W per path， it generates six output laser beams with a wavelength of 1 064.4 nm， pulse width of 2.4 ns， beam quality of 1.39， peak power of 3.75 kW， and a repetition frequency up to 22 kHz. The entire system''s volume is only 2 cm×2 cm ×1.5 cm， and achieves simultaneous output of six laser paths. The study investigated the impact mechanism of the initial transmittance of the Q-switching crystal and the reflectivity of the output mirror on the laser pulse repetition frequency and peak power， with a particular focus on the uniformity of the laser output from the pump source cores. The feasibility of using a single laser-bonded crystal to produce multiple narrow pulse laser beams in the nanosecond range was experimentally verified. The research results demonstrate the miniaturized structure''s ability to achieve multi-beam emission from a passive Q-switched solid-state laser， providing insights for the miniaturization and integration of laser sources in detection systems.