between a movement line 400 of the plunger 164 and a position 410 of the pad pin 170 referring to fig5 the plunger 164 is moved forward by the actuator 100 such that the shield 110 does not block the high beam further a second distance difference d 2 is formed between the movement line 400 of the plunger 164 and the position 410 of the pad pin 170 and the first distance difference d 1 is smaller than the second distance difference d 2 referring to fig4 and 5 a front end portion of the forward and rearward guide 150 and the inclined guide 160 may be joined with each other and the guide slot 155 of the forward and rearward guide 150 may be connected to the slot of the inclined guide 160 fig6 is a partial detailed view illustrating the low beam state of the shield unit of the head light module according to various embodiments of the present invention and fig7 is a partial detailed view illustrating the high beam state of the shield unit of the head light module according to various embodiments of the present invention therefore referring to fig6 when the plunger 164 is moved rearward by the actuator 100 an amount of compression by which the compressive roll pad 162 is compressed by one surface of the plunger 164 is large referring to fig7 when the plunger 164 is moved forward by the actuator 100 an amount of compression by which the compressive roll pad 162 is compressed by the one surface of the plunger 164 is small or the compressive roll pad 162 is not compressed fig8 is a graph illustrating an operation state of the head light module according to various embodiments of.