Magnetic oil dipstick with sediment discharging function and airplane comprising magnetic oil dipstick

The invention relates to a magnetic oil dipstick with a sediment discharging function and an airplane comprising the magnetic oil dipstick. The magnetic oil dipstick comprises a magnetic block, an equipment outer shell, an equipment inner shell, a magnetic floater, a graduated scale, an equipment lower flange, a rotary knob, an outer side sealing ring, an inner side spring, a limiting block and a valve cover. The equipment outer shell sleeves the outer side of the equipment inner shell, the magnetic block and the graduated scale are arranged in the equipment inner shell, the magnetic floater is mounted on the outer surface of the equipment outer shell, the magnetic block is mounted above the graduated scale, the limiting block is arranged above the inner side spring, and the lower side of the inner side spring is in contact with the knob; the equipment lower flange is fixed below a structure installation connector of an airplane, the outer side sealing ring is arranged between the equipment lower flange and t