The utility model relates to an automatic production and filling device for capsules. The device comprises a feeding hopper, a mixing bin, a conical hopper and a filling machine, a feeding port is formed in the lower portion of the feeding hopper, the feeding port is communicated with the mixing bin through a discharging pipe, a meter is arranged at the feeding port, the conical hopper is arrangedbelow the mixing bin and communicated with the mixing bin, a discharging port is formed in the bottom of the conical hopper, and a stirring assembly is arranged in the mixing bin; the filling machinecomprises a shell and a filling inlet; the filling inlet is communicated with a discharging port in the bottom of the conical hopper, the bottom of the filling inlet is communicated with a feeding pipe, a conveying belt is arranged on the lower portion of the shell, a humidity sensor is arranged in the shell and connected with a display screen on the outer surface of the shell, and a dehumidifieris arranged at the top of the shell and communicated with the interior of the shell through a dehumidification pipeline. According to the utility model, single medicine is metered and proportioned, so that the medicine preparation quality is improved; the humidity is controlled through the dehumidifier and the humidity sensor, the internal dryness of the filling machine is improved, and the capsule filling yield is increased.