With　the　rapid　development　of　Internet,　the　views　of　the　online　video　have　increased　dramatically.　Meanwhile,　the　corresponding　online　video　advertising　market　showed　a　momentum　of　rapid　and　sustained　development.　In　order　to　attract　more　potential　purchasers　and　reduce　the　interference　on　the　ordinary　video　browsers,　many　researchers　and　enterprises　have　conducted　the　research　of　video　online　advertising.　At　present,　the　insertion　methods　of　most　video　advertising　are　always　position-fixed,　mandatory　timing,　quantitative,　and　the　relevance　of　advertisement　content　and　the　video　content　is　usually　ignored.　These　methods　will　inevitably　reduce　the　advertising　effect　because　of　browsers＇　dissatisfaction　and　resistance.　In　order　to　overcome　the　shortages　of　the　existing　methods　of　video　advertisement　insertion,　this　paper　proposed　an　effective　content-targeted　method　for　online　video　advertising.　The　insertion　of　advertisement　is　determined　by　comparing　the　content　of　the　videos　and　the　advertisements.　At　the　same　time,　the　characteristics　of　the　scene　switching　in　the　video　are　taken　into　account　to　select　the　appropriate　position　of　the　advertisement　insertion.　Experimental　results　show　that　our　method　can　provide　a　better　user　experience　than　existing　methods,　and　its　attractiveness　and　comfortableness　is　greatly　improved.