The utility model provides a movable type liquid level meter of a multifunctional tank, which belongs to a device for oil field production. The movable type liquid level meter is provided with a connecting cylinder body, wherein the upper surface of the connecting cylinder body is fixedly provided with a packing box cylinder body, the upper surface of the packing box cylinder body is provided with a packing gland, a floating rod is arranged at the inner sides of the connecting cylinder body, the packing box cylinder body and the packing gland, the outer surface of the upper part of the floating rod is provided with liquid level scales, the lower end of the floating rod is connected with a floater, and a sealing packing is arranged between the inner wall of the packing box cylinder body and the floating rod. According to the movable type liquid level meter of the multifunctional tank, provided by the utility model, the movable type liquid level meter can be installed in the position of the multifunctional tank, at which a safety valve is originally arranged, the liquid level in the multifunctional tank can be conveniently observed, the oil leakage phenomenon of the multifunctional tank is prevented from happening, and the normal production of an oil well is ensured; and the structure is simple and reasonable, the maintenance is convenient, and the use is safe and reliable.