The invention discloses an electronic type liquid filling device which comprises a backpressure cavity and a filling valve, wherein backpressure gas in the backpressure cavity is communicated with backpressure gas above the liquid level in a cylinder through a pipeline. The electronic type liquid filling device also comprises a backpressure valve, a first pressure relief valve, a second pressure relief valve, an exhaust valve and a pressure relief cavity, wherein the backpressure valve is used for communicating a swinging pipe with the backpressure cavity, the first pressure relief valve is used for communicating the swinging pipe with the pressure relief cavity, the lower end of a valve base is sleeved with a container opening sealing sleeve going up and down under the drive of a sealing sleeve lifting device, a gas return gap is arranged between the container opening sealing sleeve and the peripheral surface of the valve base, and the second pressure relief valve and the exhaust valve are used for communicating the gas return gap with the pressure relief cavity. According to the electronic type liquid filling device, the oxygen increment of materials in a filling process is reduced, so that the possibility of bubbling of the materials is lowered.