Automatic grass feeding device

The utility model provides an automatic grass feeding device. The automatic grass feeding device comprises a rack, a raw material bin, a feed bin, a feeding mechanism, a driving mechanism and a controller. A guide rod is arranged on the rack, and the length direction of the guide rod is set as a first direction; the raw material bin is arranged at one end of the rack in the first direction, located below the guide rod and used for storing all feed raw materials. The number of the feed bins is at least two, and the feed bins are arranged below the guide rod in the first direction at intervals. The feeding mechanism is located above the raw material bin and the feed bin and comprises a sliding block, a winding machine and a material taking mechanical arm. The winding machine drives the material taking mechanical arm to move in the vertical direction. The driving mechanism comprises a first driver and a lead screw, and the lead screw is rotationally arranged on the rack and is in spiral transmission with the sli