The utility model relates to an automatic bait throwing device used for breeding in ponds, which comprises a bait storing barrel provided with a rainproof cover, a control box provided with a timer and an operating window used for regulating a gate valve, and a bait throwing outlet. The inner side of the barrel is provided with a motor controlled by timing, and a core shaft of the motor is provided with a conical bait throwing disk. The bait is arranged in a bait cabin positioned at the upper part of the barrel, and the bait throwing machine is started. The automatic bait throwing device can send alarm before the bait is thrown, and the bait can be automatically thrown according to the preset feeding time, interval time and bait throwing quantity.