The invention discloses a microlens array with smaller aberration, the microlens array is composed of a polymer lens (1) and a liquid lens, the polymer lens (1) is positioned on the upper side or the lower side of the liquid lens; the liquid lens comprises a first substrate (3), a mesh-shaped electrode (2), a drainage layer (5), a mesh-shaped partition (4), a nonpolarity oil (6), an electrolyte water (7), a transparent electrode (8) and a second substrate (9), the focal distance of the polymer lens (1) of the invention is fixed, the focal distance of the liquid lens can be adjusted, the integral diopter of the lens unit is the sum of the polymer lens (1) and the liquid lens, thereby implementing the larger diopter, meanwhile, the liquid lens has larger curvature radius and smaller aberration.