The creative medical expansion bed is mainly composed of a bed frame, two expansion mechanisms and a corner expansion mechanism. The bed frame has a bed surface for the patient to lie, and the two expansion mechanisms respectively have guardrails, and are all assembled and assembled on the bed frame, so that the two guardrails All of them can be far away from the bed frame, thereby changing the width and length of the bed surface, and the corner expansion mechanism has two moving frames that are connected to each other, and one of the two moving frames is assembled to the bed frame, and the other is connected to the assembly. a moving board located above the bed frame, wherein the two guard rails are moved away from the bed frame, so that the moving board can be sequentially moved from the first position to the second position and the third position through the two moving frames, thereby gradually reducing the overlapping area. Therefore, when the moving plate is in the third position, the moving plate still has a partial area touching the bed surface, so that the bed surface can not only change the length and width through the two expansion mechanisms, but also can be enlarged by the moving plate. The corners of the bed can maintain the effect of carrying heavy loads.本創作醫療擴充床主要由床架、兩擴充機構以及角落擴充機構所構成，床架具有供患者躺臥的床面，而兩擴充機構分別具有護欄，並皆活動組裝於床架，使得兩護欄皆能遠離於床架，進而改變床面的寬度與長度，且角落擴充機構具有兩相互活動組接的移動架，而兩移動架其中之一活動組裝於床架，而另一個連接於組裝一位於床架上方的移動板，其中，兩護欄因移動而遠離床架，使移動板能透過兩移動架能由第一位置依序移動至第二位置與第三位置，進而使重疊區域逐漸縮小，藉此，當移動板位於第三位置時，移動板依然有部分區域牴觸於床面，使得床面不但可以透過兩擴充機構改變長寬尺寸，還能透過移動板讓變大尺寸後的床面角落能保持原本乘載重物的效果。
