Fuel filter for automatically excluding air

The invention discloses a fuel filter for automatically excluding air. The fuel filter for automatically excluding air comprises a fuel filter for cleaning fuel, and a vacuum source forming device; an air inlet end of the vacuum source forming device keeps communication with the fuel filter; the vacuum source forming device has an exhaust end and an internal control unit; the internal control unit is used for automatically controlling a working execution mechanism of the vacuum source forming device; and the vacuum source forming device is communicated with an oil tank through the exhaust end and an exhaust pipeline. The fuel filter for automatically excluding air integrates the vacuum source forming device based on a traditional fuel filter; the internal control unit is in the device; and massive air separated out from fuel in the fuel filter is preferably excluded under the negative-pressure effect of vacuum source formation, and includes gas permeated in caused by weak sealing of related parts of a fuel sy