The present invention provides a piezoelectrically driven optical lens module. The piezoelectrically driven optical lens module includes at least a lens body, a guiding rod for providing an axial movement track, a piezoelectric element for providing driving force, and an elastic element for providing the piezoelectric element with pre-load, so as to allow the piezoelectric element to be in contact with the guiding rod. The lens body includes at least an enclosed hollow structure, a lens barrel axially moveable and fixed to the enclosed hollow structure, and a lens element fixed to the lens barrel. The piezoelectric element is in contact with the guiding rod via the elastic elements, and the piezoelectric element is used for driving the lens barrel to move linearly along the guiding rod. The present invention provides a piezoelectrically driven optical lens module with a simple structure, to overcome the drawbacks of the prior art.