The invention relates to a quick
file comparison method, a quick
file comparison system and a quick
file comparison client side. The quick file comparison method comprises the steps of: e scanning and analyzing a local file
directory by the
client side; according to the variation of the local
file system, updating a first identification tree maintained by the
client side; corresponding a node in the first identification tree to each local
directory of the
client side, wherein node information comprises a node identification and relevant
directory information; comparing a second identification tree maintained by
server side equipment with the first identification
tree node by node by the
client side; recording a difference node and a variation file corresponding to the difference node; and according to the difference node and the variation file, providing data to the
server side equipment section by the
client side so as to update the second identification tree maintained by
server side equipment and a stored file. According to the quick file comparison method, a mode of comparing node information for reflecting the local
file system of the client side is adopted, and due to the mode, the quickness is realized, the mode is more suitable for bigger and a more complex
file system, and the file comparison efficiency and performance can be effectively improved.