The embodiment of the invention provides a data storage method and device. The method comprises the steps that target data information comprising determining at least two pieces of information; and combining at least two pieces of information in the target data information to obtain at least one group of combination information, and adding the at least one group of combination information into a combination database. In this regard, the scheme is provided, different information is combined in advance; storing the obtained combination information in a combination database; therefore, when the query request is received subsequently, the combined information can be directly queried from the combined database, mass target data information does not need to be searched for, and the information quantity of the target data information is far greater than that of the combined database, so that the scheme can improve the query efficiency and further improve the user experience.