Medicine preparation device

The invention provides a medicine preparation device which comprises an operation box, a storage frame, a cup body, a water blending mechanism and a mixing and dissolving mechanism, an operation opening is formed in one side of the operation box, and a water storage tank is arranged outside the operation box; the storage frame is slidably mounted on the operation box; the cup body is placed in the storage frame; the water mixing mechanism comprises a water injection cylinder and a piston, the water injection cylinder is installed in the operation box, the piston is movably inserted into the water injection cylinder and connected with the storage frame, the water injection cylinder is provided with a first valve body and a second valve body, the first valve body is provided with a first guide pipe, the first guide pipe penetrates into the top of the storage frame, the second valve body is provided with a second guide pipe, and the second guide pipe is communicated with the water storage box; and the mixing and