The present invention discloses a camera optical lens with seven-piece lenses including, from an object side to an image side in sequence, 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 refractive power, a fifth lens having a positive refractive power, a sixth lens having a negative refractive power and a seventh lens having a negative refractive power. Herein the camera optical lens satisfies the following conditions: −10.00≤f4/f≤10.00, 4.00≤d5/d6≤8.00, and 2.00≤(R3+R4)/(R3−R4)≤10.00. The camera optical lens according to the present invention has excellent optical characteristics, such as large aperture, wide-angle, and ultra-thin.