The invention provides a monitor with an adjustment function. When the monitor needs to adjust the direction, a user pulls down a handle, and the handle drives a sealing piston to slide downwards through a piston rod. Air in an inner cavity flows to a cylindrical cavity, and air pressure in the inner cavity is reduced. An inner capsule layer gradually extends and protrudes from through holes intothe inner cavity due to the large air pressure in an airbag, and elastic deformation occurs. An outer capsule layer contracts in the direction of an inner spherical shell to drive limiting columns toslide in the direction of the inner spherical shell. When the limiting columns are completely slid out from limiting slots, the monitor can be freely rotated. After the adjustment of the monitor direction is completed, the handle is pulled upwards by the user, the handle drives the sealing piston to slide upwards through the piston rod. The air in the cylindrical cavity flows to the inner cavity through a communicating opening, and the air pressure in the inner cavity increases. The inner capsule layer contracts to a first gap, the outer capsule layer moves in the direction of the outer spherical shell and pushes the limiting columns to enter into the limiting slots, and an outer ball cover is limited and fixed. The use is convenient.