The utility model provides a sealing device of edge planer presser foot, include: the hydraulic pressure cylinder shell body further includes a sealed lid, a barrel and a sealed pedestal, sealed lid with barrel upper portion is connected, sealed pedestal with the barrel sub -unit connection, a piston, set up in hydraulic pressure cylinder shell is internal, and will seal chamber keeps apart for upper oil pressure cavity and lower floor's oil pressure cavity, one side of upper strata oil pressure cavity and lower floor's oil pressure cavity all is equipped with one and advances the oil gallery, a seal receptacle barrel, the seal receptacle barrel is located in lower floor's oil pressure cavity, and with sealed pedestal integrated into one piece connects, an outrigger shaft runs through in proper order sealed pedestal the seal receptacle barrel extends to the piston and with hinge joint, with outrigger shaft in close contact with be equipped with the multichannel recess on the seal receptacle barrel medial surface, all be equipped with a sealing member in each recess.