The invention provides a pressure adjusting structure comprising a
valve seat, an exhaust tube and a
magnetic valve body. The lower end of the exhausting tube passes through the
valve seat; the
magnetic valve body sleeves the upper end port of the exhausting tube; a magnetic
cushion block is arranged between the
valve seat and the
magnetic valve body; and the magnetic
cushion block is connected with the valve seat via a magnetic
cushion block adjusting structure adjusting up-down positions of the magnetic cushion block. When a pressure limiting value of a pressure-limiting valve has to be adjusted, the up-down positions of the magnetic cushion block is adjusted by the magnetic cushion block adjusting structure, so a distance from the magnetic
gasket to the magnetic valve body can be changed; when the distance changes,
magnetic field force between the magnetic cushion block and the magnetic valve body can be changed; the pressure limiting value of the pressure limiting valve is the
self weight of the magnetic valve body and the
magnetic field force between the pressure limiting valve and the magnetic valve body; the pressure limiting value of the pressure limiting valve can be adjusted and food cooking effect of the pressure
cooker can be improved; meanwhile, the use of elastic components such as springs can be avoided in the adjusting structure, so fewer components are required; and the pressure adjusting structure is simply structured, convenient to
assembly and has high reliability.