With the gradual expansion of power grid scale, the accumulation of massive power grid operation data and the continuous increase of operational work, a large number of dispatching commands and dispatching operations rely on the telephone system to communicate with dispatching agencies at all levels. And increasingly complex power grid operations weaken the emotional state, mental state and memory ability of the dispatchers. Therefore, an intelligent dispatching system is designed by combining artificial intelligence, speech understanding and cloud computing technology. For the grid dispatching scenarios, a vocal adaptive speech recognition method is proposed, which improves the dispatching speech recognition ability of the intelligent dispatching system.