The dissertation to present about Therapy of Joint body by use function principle of Air compressor’s Air motor to compress the air. The Micro controller was control function machine and it receive function value from function control push button. It is setting push button and emergency push button for order to close-open and to set function control. There are a monitor for view data and light bulb, they were show the result function. Therapy machine of joint body could set the time by highest user for 3 hour, setting the frequency of compress get to level 3 and setting intensity of compress get to level 3 too. From the ability test with standard clock and anemometer machine show the result which the therapy machine of joint body could set the highest time get to 3 hour, have mistake average on 3 second, frequency of compress value on first-level get 10 time per minute, second-level get 15 time per minute, first-level get 30 time per minute, final around the air power value from intensity of compress value in level 3 be equal to 0.20 bar.