Method and device for calculating product reference price and method and system for searching products

The invention provides a method and device for calculating product reference price and a method and system for searching products to solve the problem that product price obtained through statistics on the basis of product selling price simply is inaccurate in the prior art, and searching accuracy is influenced. Vast amount of commodity information is used as a data source, aggregation classification calculation is performed on data in the data source according to the commodity price, commodity grouping with different price ranges is obtained, a group is selected from the commodity grouping according to preset screening conditions, one commodity is selected from the group of commodities, and the price of the commodity is used as the reference price of products where the commodity belongs to. The method and device for calculating the product reference price and the method and system for searching products are objective in calculation and accurate in obtained product reference price, conform to practical price, have high reference value, and can improve searching accuracy.