The invention discloses a visual enema device for treating ulcerative colitis patients. The visual enema device comprises a medicine barrel, a control part is installed at the top of the medicine barrel, a control panel is installed on the control part, and a plurality of damping devices are installed at the bottom of the medicine barrel; and the control part comprises a power module, a protective shell and a feeding pipe, a first motor is installed in the protective shell, an output shaft of the first motor is fixedly connected with a first rotating shaft through a coupler, and the first rotating shaft penetrates through the medicine barrel and extends downwards into a crushing box. The device is provided with the crushing box and a stirring box, sheet-shaped or other-shaped solid medicines are put into the crushing box through a feeding tube, the medicines are crushed into small particles or powder, the crushed small particles or powder medicines enter the stirring box and are stirred and heated, preparation of a liquid medicine required by enema is completed in the stirring box, and other medicinal materials can be continuously added in the preparation process, so that the preparation and injection of medicines with different effects in the enema process are realized.