The invention discloses an electrically-controlled automatic screening machine. The screening machine structurally comprises a feeding separating valve, a fine material collecting plate, vibrating springs, supporting columns, a vibration drive, a driving motor, a lever supporting rod, an electronic weighing machine, a lever, a coupling, a lump material discharging port, a vibrating screen and a feeding hopper, wherein the lump material discharging port is formed in the lower left part of the vibrating screen, the feeding hopper is installed on the upper right of the vibrating screen, the feeding separating valve is installed between the feeding hopper and the vibrating screen, the vibrating screen is connected with the fine material collecting plate through the vibrating springs, the fine material collecting plate is installed below the vibrating screen and installed on the supporting columns through the vibrating springs, and the vibration drive is installed on the lower portion of the fine material collecting plate. Because the procedures of screening, metering, packaging and the like are combined, the process is simplified, and the production efficiency is improved; besides, bags of products are uniform in weight and small in error, and metering control is accurate. Thus, the screening machine has certain application and popularization value.