The invention discloses a mixing and stirring tank which comprises a tank body, a main vertical stirring device and a stirring motor, wherein a stirring blade at the lower end of the main stirring device is positioned in the tank body; the other end of the main stirring device is connected with the stirring motor outside the tank body; one or more transverse auxiliary stirrers are arranged in the tank body; and one ends of the auxiliary stirrers are connected with a spindle of the main stirring device trough a gear, and the other ends of the auxiliary stirrers are connected to the tank body through a bearing. According to the device, materials can be rotated and mixed in the tank body in the horizontal direction and can be further turned and mixed up and down, so that the materials are stirred more fully and completely, and the mixing effect is obviously improved.