To　explore　the　characteristics　and　influencing　factors　of　highway　traffic　accidents,　this　paper　uses　the　association　rule　mining　method　to　analyze　the　traffic　accident　data　of　some　sections　of　G20　and　G35　highways　in　Shandong　Province.　The　results　show　that　there　is　a　strong　correlation　between　traffic　accidents　and　lane　location　and　traffic　signs.　Rear-end　collisions　are　prone　to　occur　on　road　sections　with　multiple　traffic　signs,　and　it　has　a　strong　correlation　with　minor　accidents.　Bumping　the　guardrail　is　more　likely　to　occur　in　the　first　lane　of　a　road　section　with　a　single　traffic　sign　and　is　more　serious.　These　findings　can　help　in　choosing　options　to　reduce　the　risk　of　traffic　accidents　on　highways,　reduce　traffic　casualties,　and　promote　road　safety　in　other　areas.