An imaging lens assembly module includes an imaging lens assembly, a light path folding element, a first lens barrel, a second lens barrel, a base and a plurality of rolling bearings. The imaging lens assembly includes a plurality of plastic lens elements, and defines a first optical axis passing through the plastic lens elements. The first lens barrel contains one or more of the plastic lens elements. The second lens barrel contains another one or more of the plastic lens elements. The base includes a guiding groove structure, and the guiding groove structure extends continuously along a direction parallel to the first optical axis. The rolling bearings interposed between the first lens barrel and the base and the rolling bearings interposed between the second lens barrel and the base are interposed in the guiding groove structure.