The invention discloses an ion solidifying liquid full-automatic preparation cylinder for lysozyme dipolymer granulation. The ion solidifying liquid full-automatic preparation cylinder comprises a cylinder body, an automatic control platform, a mechanical stirrer, a liquid level sensor, a temperature sensor, a conductometer, a solidifying liquid outlet, a feeding port, a water replenishing pipe, aliquid replenishing pipe and a recycling pipe, a medium jacket filled with a heat conducting medium, a heat-insulating layer and a shell are sequentially arranged on the outer wall of the cylinder body outwards, the medium jacket is provided with a heat conducting medium inlet and a heat conducting medium outlet, a water replenishing electromagnetic valve is arranged on the water replenishing pipe, a liquid replenishing electromagnetic valve is arranged on the liquid replenishing pipe, and the water replenishing electromagnetic valve, the liquid replenishing electromagnetic valve, the liquidlevel sensor, the temperature sensor and the conductometer are electrically connected with the automatic control platform. The preparation cylinder can realize full automation, can accurately controlpreparation of ion solidifying liquid and can recycle the ion solidifying liquid after being granulated, so that production cost is lowered greatly.