1. An energy management control system based on cloud computing, characterized by comprising: a field controller for field controlling each energy consumption device according to user defined parameters and sending the user defined parameters to a cloud computing management control platform; an energy consumption parameter collector for collecting parameters related to energy consumption of each energy consumption device and sending the collected parameters to the cloud computing management control platform; and the cloud computing management control platform for adjusting a field control mode of the field controller for each energy consumption device according to the collected parameters related to energy consumption of each energy consumption device and the user defined parameters.