A camera optical lens includes, from an object side to an image side, a first lens having a positive refractive power, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens having a positive refractive power, and a fifth lens having a negative refractive power, and satisfies: 1.20≤f2/f1≤7.00; 1.50≤R6/R5≤5.00; and 1.20≤d5/d6≤2.00, where f1 and f2 respectively denote focal lengths of the first and second lenses; R5 and R6 respectively denote central curvature radii of object side and image side surfaces of the third lens; d5 denotes an on-axis thickness of the third lens; and d6 denotes an on-axis distance from the image side surface of the third lens to an object side surface of the fourth lens, thereby achieving good optical performance while satisfying design requirements for ultra-thinness, a wide angle and a large aperture.