The invention discloses a central air conditioner energy consumption managing system based on big data analysis. Current data, voltage data and electricity consumption statistical data of an air conditioner are collected, indoor temperature and humidity and outdoor temperature and humidity data of space where a central air conditioner is located are monitored, the indoor space of the central air conditioner is subjected to video monitoring and human body infrared induction monitoring, the running state of the system device can be monitored, the data are subjected to analysis treatment, the temperature and humidity adjusting scheme is provided, the long-term data of the central air conditioner can be stored, the central air conditioner can be subjected to temperature and humidity adjusting,power supply managing is carried out, equipment power is adjusted, the system is controlled, the real-time data and the long-term data of the current data, the voltage data and the electricity consumption data of the air conditioner can be checked, data basis can be provided for improvement of the central air conditioner, the invention further provides a use method of the central air conditionerenergy consumption managing system based on big data analysis, operation is rapid and convenient, and the system is worth of popularization.