An imaging lens module, comprising: at least one imaging lens unit, comprising at least one plastic lens barrel and at least one plastic lens element group and having an optical axis, wherein the at least one plastic lens element group is accommodated in the at least one plastic lens barrel, and the optical axis passes through the at least one plastic lens element group; an optical folding component, configured to fold an incident optical path into the at least one imaging lens unit to coincide with the optical axis; and a sensing magnet group, comprising at least two sensing magnets (161, 162) that are sequentially disposed on the at least one plastic lens barrel along a direction in parallel with the optical axis; wherein the at least two sensing magnets (161, 162) are located at a same side with respect to a reference plane that passes through the optical axis, and the reference plane has a normal direction perpendicular to the optical axis; wherein when the at least two sensing magnets (161, 162) are observed from the direction in parallel with the optical axis, images of the at least two sensing magnets (161, 162) are at least partially overlapped; wherein two adjacent magnetic poles of the at least two sensing magnets (161, 162) are like poles between which there is a repulsive force; wherein a shortest distance along the direction in parallel with the optical axis between two magnetic like poles among the at least two sensing magnets (161, 162) is Dp, a longest distance along the direction in parallel with the optical axis between two magnetic poles among the at least two sensing magnets (161, 162) is Dm, a total quantity of the at least two sensing magnets (161, 162) is Nt, and the following condition is satisfied: 0.1 < Nt × Dp / Dm − Nt − 1 × Dp < 3.2. at least one imaging lens unit, comprising at least one plastic lens barrel and at least one plastic lens element group and having an optical axis, wherein the at least one plastic lens element group is accommodated in the at least one plastic lens barrel, and the optical axis passes through the at least one plastic lens element group; an optical folding component, configured to fold an incident optical path into the at least one imaging lens unit to coincide with the optical axis; and a sensing magnet group, comprising at least two sensing magnets (161, 162) that are sequentially disposed on the at least one plastic lens barrel along a direction in parallel with the optical axis; wherein the at least two sensing magnets (161, 162) are located at a same side with respect to a reference plane that passes through the optical axis, and the reference plane has a normal direction perpendicular to the optical axis; wherein when the at least two sensing magnets (161, 162) are observed from the direction in parallel with the optical axis, images of the at least two sensing magnets (161, 162) are at least partially overlapped; wherein two adjacent magnetic poles of the at least two sensing magnets (161, 162) are like poles between which there is a repulsive force; wherein a shortest distance along the direction in parallel with the optical axis between two magnetic like poles among the at least two sensing magnets (161, 162) is Dp, a longest distance along the direction in parallel with the optical axis between two magnetic poles among the at least two sensing magnets (161, 162) is Dm, a total quantity of the at least two sensing magnets (161, 162) is Nt, and the following condition is satisfied: 0.1 < Nt × Dp / Dm − Nt − 1 × Dp < 3.2.