The invention discloses a cloud platform data storage method comprising the following steps of establishing a cloud platform 
data storage system; receiving data generated by experimental facilities of a user and automatically synchronously transmitting to a 
temporary storage directory for data storage of a cloud platform, then storing into a data 
directory, of an item to which the data belongs, under a storage 
data sharing directory; and if the 
system has no matched item name, storing the data into a personal data directory in a corresponding personal 
home directory under a cloud platform 
home directory. According to the method, the problems that an authority management logic is simple in the existing cloud platform storage 
system and the user asks to 
mange the data hierarchically in the use of the cloud platform can be solved, hierarchical authority management can be performed on the stored data, storage is real-time and efficient, the functions of filing, dumping and completely backuping are provided, the purposes that the stored data is hierarchically managed and security of the stored data is ensured are achieved, the 
standardization of the cloud platform data storage directory is achieved, and subsequent 
upgrade and maintenance of the platform are facilitated.