This creation provides a knee joint pressure detection and warning system, which includes a foot device, a knee device and a mobile device. When the user wears the shoe body and gait, the foot device generates a foot pressure signal； the knee device is installed in The user's knee joint generates a motion signal when the user's gait； the memory of the mobile device contains an application program that receives and processes the foot pressure signal and the motion signal to generate a knee joint bearing value； When the knee joint bearing value exceeds a standard value, the application program generates and displays a warning signal； thereby, providing the user with a correction of the knee joint stress state and reducing the damage to the knee joint.本創作提供一種膝關節壓力偵測警示系統，其包含足部裝置、膝部裝置及行動裝置，使用者穿著鞋體且步態時，足部裝置產生之一足壓訊號；膝部裝置裝設於使用者之膝關節，於使用者步態時，膝部裝置產生一運動訊號；行動裝置之記憶體載有一應用程式，應用程式接收處理足壓訊號及運動訊號，以產生一膝關節承受值；當膝關節承受值超過一標準值，應用程式產生並顯示一警示訊號；藉此，提供使用者校正膝關節受力狀態，減緩對膝關節之損傷。
