The invention belongs to the technical field of e-commerce, and provides a universal method for correlating single items of different e-commerce websites. The method comprises the steps as follows: step 1, extracting commodity identification; step 2, obtaining the key value pair data of the commodity identification from commodity single item pages of different websites; step 3, describing and classifying the commodity identification obtained in the step 1; dividing the description information of each item ID obtained in the step 1 into a page headline and an attribute list; step 4, matching each commodity identification with the commodity identification in other websites, and selecting the item ID similar to the commodity identification in the other websites. The method of the invention improves the matching degree of the commodities in different websites, and enables the matching to be faster, thereby greatly increasing number of the users with purchasing intensions and improving commercial value.