The invention belongs to the field of accounting practical training, particularly relates to an accounting practical training platform based on a block chain, and provides the following scheme for solving the problems that when an existing accounting practical training platform is used, stored data cannot be automatically cleaned conveniently, a memory is not cleaned in time, and the phenomenon that the data cannot be stored easily is caused. The platform comprises a display module, an evaluation module, a comparison module, a transmission module, an acquisition module, a practical training module, a storage module, a monitoring module, a timing module, an extraction module, a cleaning module, a reminding module, a setting module, a buffer module and a deletion module, the practical training module is connected with the acquisition module and the monitoring module, and the acquisition module is connected with the transmission module, the transmission module is connected with the comparison module, and the comparison module is connected with the judgment module and the storage module. According to the invention, the stored data can be cleaned, the cleaned data can be buffered and stored, people can be reminded, and a relatively large storage space is ensured.