1. A website navigation implementing method, comprising: deriving a confidence level for at least one leaf node of a website navigation category diagram using historical user operation data, wherein the confidence level for the at least one lead node is determined based at least in part on historical search behavior data; generating a plurality of navigation hierarchical structure diagrams based on the website navigation category diagram, wherein for at least one of the plurality of navigation hierarchical structure diagrams, leaf nodes with a corresponding confidence level greater than a preset threshold value are included in a predetermined level of the navigation hierarchical structure diagram; determining a searching cost associated with each of the plurality of navigation hierarchical structure diagrams; determining the navigation hierarchical structure diagram associated with the lowest searching cost; and implementing, using a processor, at least in part a website navigation process using the navigation hierarchical structure diagram associated with the lowest searching cost.