The invention discloses a data local storage control method and device based on a mixed mode mobile application. The data local storage control method comprises the steps of: after the mixed mode mobile application of a mobile terminal receives a storage request of a remote page, carrying out storage judgment; carrying out assessment on content to be stored and a local storage file to which the content is stored, and judging whether the local storage file can receive storage request of the content to be stored; and if yes, storing the content to the local storage file, and if not, not carrying out storage. According to the invention, after the assessment and judgment, the storage is carried out only under the condition that the storage is necessary, so that the utilization rate of the storage space of the mobile terminal is effectively improved, and the storage performance of Local storage is improved.