Data verifying method, electronic device and data verifying system

The invention relates to a data verifying method, an electronic device and a data verifying system. By means of the method, data of the electronic device is stored by a binary tree, wherein the firstdata of the device is stored on binary tree leaf nodes, the second data not stored on the leaf nodes is the data obtained after sub-node data not stored on the leaf nodes are calculated according to apreset algorithm, the corresponding second data of the binary tree is not updated until allowed updating happens to the first data, that is to say, the second data of the binary tree can not be updated when tampering and other unallowed updating happens to the first data, and therefore the consistency based on the preset algorithm of the data stored on the corresponding leaf nodes and the data not stored on the corresponding leaf nodes on the binary tree cannot be kept, and on this basis, the problem of credibility verification in data sharing and transmitting in a multi-device distributed type data storage environmen