This applicator is a rubber ball (medical rubber) with a diameter of 55 mm (including needles) with 4 metal needles (copper, zinc, iron, silver) mounted in the rubber base. The pitch between the needles is 4 mm. The healing and therapeutic effect of the applicator is due to the design feature and pronounced reflex-mechanical, as well as galvanic-electrical properties. Applicators activate the activity of the nervous, cardiovascular, skeletal, digestive and immune systems. In the human body, certain parts of the body through the skin receptors and nerve fibers are connected with internal organs. Exposure to a specific part of the skin, we treat the internal organ associated with this area. Thus, the use of applicators improves blood circulation, enhances metabolic and recovery processes, relieves pain, reduces swelling, that is, the body heals itself. Between the needles and at their tips coated with various metals, galvanic currents arise that improve the metabolism, have a resolving effect, and contribute to the production of biologically active substances. Also, due to the galvanic-electric effect, the conduction of nerve impulses improves, pain sensitivity decreases, and the cause of pain is excluded. Such a combination of metals is chosen for a reason, these microelements are important to ensure the proper functioning of various organ systems. Between them there is a process of microionphoresis, when entering the body’s fluid environment. Use of the applicator "Ball needle": Rolling, light clamps on the feet and palms, which are the projection zones of all organ systems in the human body. This effect is locally capable of developing motility and tactile sensitivity of the extremities; it develops and restores brain functions in adults and children. Also, this ball is convenient to use for the so-called "finger gymnastics", universally used by children's psychologists, speech therapists, rehabilitation therapists, valeologists and other doctors who work with children with delays in neuromuscular, neuro-psychomotor development, speech, stuttering, and cerebral palsy. As the areas of application of the applicator "Ball needle", it should be noted: 1) Damage to the articular-ligamentous apparatus of the hands, fingers, feet, restoration of their motor function after injuries 2) “Development” of muscular-articular contact, normalization of movements in autistic people suffering from cerebral palsy 3) Craniocerebral injuries, strokes at the stage of home rehabilitation 4) Damage to peripheral nerves 5) Stress-stress state of the autonomic nervous system, the predominance of the sympathetic part of the autonomic NS (as a manifestation: numbness of fingers, cold hands) 6) Treatment of psycho-speech disorders of children (speech therapy practice) 7) Prevention and elimination of muscle finger fatigue, preparation of the hand for writing, relieving nervous tension (as a manifestation: cold hands), the use of wellness technology in education (finger gymnastics, “physical education” at school) 8) Effective prophylaxis of carpal syndrome (carpal syndrome - a disease occurs with prolonged incorrect position of the hand while working with the mouse, keyboard) 9) Reducing the psychological craving for smoking, replacing the bad habit of holding a cigarette in your hands (do squeeze and rolling between the palms) 10) Preparing your hands for playing music. tools, relieves stiffness, tone the muscles, eliminates the cooling of the fingertips during excitement 11) Under stress to remove it (Rolling the ball stimulates the nerve endings and numerous biologically active points in the palm of your hand. 12) Sedation to relieve pain (rolling the ball from problem points to the periphery counterclockwise for 15-20 minutes) 13) The stimulation effect - affect the points of the general spectrum of action clockwise from the periphery to the center for 7-10 minutes. In conclusion, I want to say that the "Ball-needle" is a means of increased exposure to areas of pain and problem points of the human body.