The air fluidized therapy bed is a specific application of solid fluidization technology in the medical field. By applying pressurized adjustable airflow, the microsphere filler inside the bed acts as a supporting medium, creating a fluidization effect characterized as “dry fluid.” When a patient lies on the bed surface, the contact area between the body and the bed surface is large, and the buoyancy generated by the fluidization effect disperses the patient’s weight, resulting in minimal interface pressure below the capillary pressure level. This not only provides soft, comfortable, and strong support for the patient but also ensures normal microcirculation at the contact points between the patient’s body and the bed surface, significantly reducing the patient’s discomfort. The surface of the bed exhibits excellent breathability and drying capabilities. The airflow that circulates over the body is soft, warm, uniformly distributed, and hygienic, thereby facilitating the rapid healing of wounds. The microsphere filler contained within the bed offers both soft and robust support for the human body while simultaneously possessing the capability to absorb exudate from the patient. Upon absorption, these microsphere filler aggregates form larger crystals, which subsequently settle at the bottom of the fluidized chamber due to gravity, thereby ceasing their involvement in the fluidization process. Meanwhile, the microsphere filler that remains unabsorbed continues to facilitate normal fluidization, allowing this cycle to repeat. This not only guarantees the proper functioning of the air fluidized therapy bed but also fundamentally inhibits bacterial proliferation and cross-contamination, thereby ensuring that patients can undergo treatment and rehabilitation in a hygienic environment.