The invention provides a system for monitoring and controlling the static electricity of polyolefin stock bin powder. The system comprises an eliminating module, a monitoring module and a controllingmodule; the eliminating module is installed on a feeding tube of a stock bin and used for eliminating the static electricity carried by the powder entering the feeding tube; the monitoring module is connected between the feeding tube and the stock bin and used for monitoring the electrification condition of the powder after the static electricity is eliminated; and the controlling module is connected with the eliminating module and the monitoring module and is used for receiving the electrification condition transmitted by the monitoring module, and adjusting the static electricity eliminatingcapacity of the eliminating module according to the electrification condition so as to control the powder static electricity in the safety value range. According to the system, the monitoring modulefor monitoring and controlling the static electricity of the polyolefin stock bin powder can accurately monitor electrification information of the powder entering the stock bin, the controlling moduleadjusts the static electricity eliminating capacity of the eliminating module in real time according to the electrification information, and thus the safety of the polyolefin powder storage and transportation and loading and unloading operation is guaranteed. In addition, the system is simple in structure and convenient to install and use.