The utility model provides a liquid carbon dioxide storage tank, which comprises a tank body, jar body top is provided with pipeline on nitrogen gas pressurization line, gas -phase pipe way, gaseous phase emission pipeline, the level gauge, jar body bottom is provided with pipeline under liquid outlet pipe, liquid filling pipeline, discharge pipeline, the level gauge, through gas -liquid intercommunication valve intercommunication between gas -phase pipe way and the liquid outlet pipe, this liquid carbon dioxide storage tank can be used to liquid carbon dioxide's in the liquid carbon dioxide fracturing storage, belongs to movable sled dressization equipment, and it is little that more traditional carbon dioxide tank wagon has the space of occupation of land, does benefit to construction equipment in the overall arrangement of standardizing at scene, and when the pressure boost of cooperation nitrogen gas was used, play liquid discharge capacity was big, can carry out remote concentrated control, and the liquid outlet speed of an ability simultaneous control number carbon dioxide storage tank makes the liquid level isostatic depression of every storage tank, and liquid carbon dioxide can obtain make full use of.