Abstract: The endozoochory of herbivores on plant seeds has now been widely accepted and a lot of research has been done since Janzen proposed the “Double F Hypothesis”. The efficiency of endozoochory is affected by four factors including plant seeds traits (such as seed size, shape, seed coat structure, and dormancy characteristics), animal digestion tract characteristics, dietary structure and faeces physical condition. Since these factors include plant seeds and animals, they therefore derive from coevolution between herbivores and plants. The basic theory of endozoochory, the main influencing factors of endozoochory and coevolution of plants and herbivores are reviewed and some foci of herbivore endozoochy in the future are discussed.