The study's aim was to assess the effects of functional task training on treating patients with arthritis in the knee while improving gait parameters. This research trial was carried out at ACS Hospital and Medical College, where 24 participants aged 45 to 60 years diagnosed with grades 2 and 3 osteoarthritis of the knee were randomly selected and divided into 2 different groupings. Functional task training was conducted by the treatment group (Group A) and the comparison group (Group B), performing conventional exercises for 12 weeks. The data was collected by assessing the patients in terms of gait parameters and WOMAC scores before and after interventions. According to the static analysis, the Experimental Group (Group A) has an initial mean value of 1.22 to 1.35 in post-test walking speed values with a t test value of 9.078 and Group B has an initial mean value of 1.21 to 1.22 with a t test value of 6.166 only and also in the WOMAC questionnaire. Experimental Group (Group A) shows a change in the mean value of 72.0 to 65.4 with a t test value of 15.852, in the control group (Group B), the mean value changes from 72.2 to 69.2 with a t test value of 10.457. These data show that there is more significance in the experimental group (Group A). By comparing the mean values and t test values of both groups, it shows that functional task training improves the walking speed of subjects with OA knees and further increases the patients' level of well-being.