Buoyancy-type pillow with combined action of gas and liquid media

A pillow with a combined action of gas and liquid media, comprising:

• a first pillow body (1), comprising a first bladder (11) having a flat shape,
• wherein an inner cavity of the first bladder (11) is filled with gas medium,
• wherein the first bladder (11) is provided with a gas volume adjustment interface (12), wherein the gas volume adjustment interface (12) is configured to fill the first bladder (11) with the gas medium or to discharge the gas medium from the first bladder (11);
• a second pillow body (2) stacked on a top of the first pillow body (1), comprising a second bladder (21) having a flat shape,
• wherein an inner cavity of the second bladder (21) is filled with liquid medium,
• wherein the second bladder (21) is provided with a liquid volume adjustment interface (22), wherein the liquid volume adjustment interface (22) is configured to fill the second bladder (21) with the liquid medium or to discharge the liquid medium from the second bladder (21);
• and
• an interlayer support pad (3) disposed in the inner cavity of the second bladder (21),
• wherein the interlayer support pad (3) has a porous structure that allows the liquid medium to flow through,
• wherein the interlayer support pad (3) is configured to undergo compressive deformation to release the liquid medium when a head and neck of a user press against the second pillow body (2), and to return to an original shape of the interlayer support pad (3) to absorb the liquid medium when the head and neck of the user are away from the second pillow body (2).