The invention discloses an anti-misoperation method and system for a hydroelectric remote control platform. Nodes of an operator workstation are arranged through authorization configuration and the operating authorization of the operator workstation about a hydropower station is configured; the right of control of an LCU (Local Control Unit) of a power station is latched, so that when the right of control of the LCU corresponding to the power station is at a centralized control center, the centralized control center carries out remote control operation on equipment controlled by the LCU; when a machine set carries out start and stop operations, a check code input step is added before a confirmation button is pressed; and each power station is stipulated to carry out remote control operation on a cockpit control page of the remote control platform only, and other human-machine interfaces do not open a control operation function. The operating authorization of the power station, the right of control of the LCU of the power station, the control of the check code and the configuration of the cockpit control page of the power station are locked through the authorization configuration, the authorization is configured for each user when the user operates in a hydroelectric remote control platform, and the occurrence of mistaken start and stop of the machine set and fault adjustment of active and reactive power output events is avoided.