A low-distortion wide-angle lens comprises a first lens (L1), a second lens (L2), a third lens (L3), a fourth lens (L4), a diaphragm (S), a fifth lens (L5), a sixth lens (L6), a seventh lens (L7), an eighth lens (L8), a ninth lens (L9) and a tenth lens (L10), which are sequentially arranged from an object side to an image side along an optical axis, wherein the third lens (L3), the fifth lens (L5) and the seventh lens (L7) have negative focal power, and the sixth lens (L6) and the tenth lens (L10) have positive focal power. Through reasonable placement and matching of the positive and negative focal power lenses and the concave and convex lenses, optical distortion of imaging is reduced, the lens is enabled not to be virtually focused in a temperature range of -30 DEG C to 70 DEG C, and imaging pixels are further improved. Due to the reasonable arrangement of the lenses, the requirement of tolerance sensitivity between the lenses can be reduced, meanwhile, the overall size of the lens can be reduced, the weight can be reduced, and the cost can be saved.