Knee instability as a symptom of ligament injury usually only receives attention when it causes pain or impacts patients’ mobility in China. In this study both the physical and psychosocial impact of an innovative approach to treatment, Half-cut Wood Training, was examined. Twenty individuals with knee instability who received Halfcut Wood Training (Intervention group) and twenty two individuals with knee instability who did not receive Half-cut Wood Training (as Control group) participated in the study. The electric WIFI based HBF-306 was used to collect the anthropometry and biomedical data. Symptom severity was assessed by a doctor and through response to a specific question. Half-cut Wood Training was used as the intervention for the knee instability patients, and the effects among pre-intervention, post-intervention and control group on self-esteem, self-efficacy, quality of life and reductions in knee instability were assessed and compared to patients in the control group. The Half-cut Wood Training has significantly improved the physical health, self-esteem, self-efficacy, legs and feet functioning of patients in the intervention group compared with control group. Moreover, the Symptom were decreased (F = 15.47, P < 0.001), and the doctor reported knee function was improved (F = 36.20, P < 0.001). The subgroups including number of sessions of attending the Half-cut Wood Training had effects on the reduction of symptoms and duration of training time more than one month has effect on the improvement of physical health. Half-cut Wood Training provides beneficial means of improving knee function, self-esteem, self-efficacy, and physical health of the quality of life of patients with the knee instability.