The invention relates to a lubricating oil tank for a jet loom, comprising a tank body with an opening; the tank body is provided with at least one oil outlet nozzle matched with the opening of the lubricating oil can of the jet loom; and the oil outlet nozzle is provided with a valve switch. When the lubricating oil tank is used, firstly, lubricating oil is introduced into the tank body from the opening, and then, when oiling is needed to be carried out on the lubricating oil, the valve switch is switched on and the opening of the lubricating oil can aims at the oil outlet nozzle, and thus oil can be fed into the oil tank. Therefore, compared with the prior art, the lubricating oil tank has the advantages of avoiding lubricating oil waste caused by manual oiling and rapidly filling oil for a plurality of oil cans with higher efficiency.