This creation provides an improved structure of a bed guardrail, which is arranged on the side of a bed, including: a first frame body, which is arranged adjacent to the head of the bed; a second frame body, which is arranged on the side of the first frame body and adjacent to the bed The end of the bed is set. The second frame body includes a pole and an armrest frame. The armrest frame is pivotally connected to the pole to move and fix inward or outward relative to the pole; and the two lifting components correspond to the first The frame body and the second frame body are arranged on the hospital bed, and one end of one of the lifting components is connected to the first frame body, and one end of the other lifting component is connected to the support rod of the second frame body to pass through the lifting components respectively Drive the first frame body and the second frame body to move vertically up and down, and form a block or open state relative to the bed, by which the position of the armrest frame can be adjusted according to the needs, to achieve both the protection of the patient, and the lifting of the patient to stand on the bed, The safety and convenience when moving or performing upper limb exercises on the bed.本創作提供一種病床護欄改良結構,供以設置於一病床邊側,包含:一第一架體,鄰近病床床頭位置設置;一第二架體,設於第一架體一側且鄰近病床床尾位置設置,第二架體包含一支桿及一扶手架,扶手架係樞接於支桿,以相對支桿向內或向外樞轉移動並固定;及二升降組件,分別對應第一架體及第二架體而設置於病床,且其中之一升降組件之一端係與第一架體連接,另一升降組件之一端與第二架體之該支桿連接,以透過升降組件分別帶動第一架體與第二架體垂直上下位移,而相對病床形成擋抵或開放狀態,藉此係可因應需求自行調整扶手架位置,達到兼具擋護病人,及提升病人上下床站立、移位,或是於床上進行上肢運動時的安全與便利性。