Height adjusting device for automobile safety belt

The invention discloses a height adjusting device for an automobile safety belt. The height adjusting device comprises a height adjusting guide rail, a sliding block movably arranged on the height adjusting guide rail and used for driving a safety belt guiding ring to move synchronously, a height adjusting motor and a power transmission assembly connected with the height adjusting motor and the sliding block. The height adjusting device for the automobile safety belt is electrically controlled, adjusting is conducted only through a button, thus operation is convenient, potential safety hazardsoccurring when the height position of the safety belt is adjusted in the automobile traveling process can be reduced, and safety and operation convenience during automobile driving are improved; andthe height adjusting device for the safety belt adopts stepless adjustment, the safety belt can be locked at any height position, and thus the demand of drivers or passengers of various body types forcomfortableness can be met