The invention discloses a cloud security terminal system applied to a training machine room, and relates to the technical field of cloud security systems. The system comprises terminal modules, a virtual desktop module, a switch module, a gateway modules, a server module and a power control module, the virtual desktop module comprises a physical view module and a virtual view module, and is connected with the switch module, the virtual module is connected with the terminal modules via a wide area network or a local area network, each terminal module is provided one gateway module correspondingly, the terminal modules are divided into resource, standard and work types, and the virtual desktop module is connected with a server module. Data and application software are deposited in a cloud end server, a user receives and uses a virtual desktop system, and thus, the cloud security terminal system is easy to maintain and convenient to manage, data is concentrated, and the working efficiency and security of a manager can be improved effectively.