The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: an aperture; a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; and a sixth lens having a negative refractive power. The camera optical lens satisfies following conditions: −9.00≤f2/f≤−6.00; 9.00≤f2/f4≤13.00; 11.00≤(R3+R4)/(R3−R4)≤20.00; and 0.02≤R7/R8≤0.30.