An photographing optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element with positive refractive power and a sixth lens element with negative refractive power and a image plane. The third lens element, the fourth lens element, the fifth lens element and the sixth lens element each has an aspheric object-side surface and an aspheric image-side surface. The object-side surface of the first lens element is convex. The sixth lens element further comprises at least one inflection point and is made of plastic. By adjusting the refractive power of the first lens element and the photographing optical lens assembly, and adjusting the total length of the photographing optical lens assembly, the total volume of the lens assembly is reduced, and the image quality is improved.