This paper is a review about resource investigation and bioactivity ingredient analysis of mosquitocide and mosquito repel plant.the mosquito is an important infectious intermedium of some fatal diseases,such as B type cephalitis,malaria,dengue fever,yellow fever,filariasis,west Nile fever,kala-azar etc.The pyrethrum or its analogs are basic ingredients in the most mosquitocides,but unfortunately,mosquito has a high resistance against pyrethrum or its analogs due to the long time and extensive usage.There is no time to be lost in the study of effectual mosquitocides and mosquito repel if only we consider the dangers of mosquito to human.Up to now,at the home and abroad,it has been paid a lot of attention in the fields of controlling mosquito directly by botanic material,finding a novel leading compounds in the plant,exploring a novel mosquitocide or mosquito repel with entire new chemical structures and activity mechanism from natural molecular models.The opportunity of finding the novel activity ingredient about mosquitocide or mosquito repel from plants depends on the advanced experiment methods or experiment apparatus,efficient separation technique and sensitive method of bioassay.