The present invention relates to an oral treatment device using an LED wavelength range, which is worn in an oral cavity to alternately arrange red and yellow LEDs as a pair, emits light of a predetermined wavelength through alternating control of the red and yellow LEDs for 2 to 3 minutes to prevent inflammatory cells of upper and lower jaw tooth parts, a tongue part, a palate, etc. at an initial stage, can be stably supported in the oral cavity, prevents stomatitis by an increase in oral blood flow, cell regeneration, reduction in inflammation, and cell activity through the red LED, and prevents infection and enhances oral health by improvement of an antioxidant enzyme system due to a detoxification effect, relief in a pain, and provision of a positive effect on a hormone system by an increase in production of serotonin and vitamin D through the yellow LED. The oral treatment device using an LED wavelength range of the present invention comprises: a lip contact unit having the center of a side surface connected to a second connection unit, and irradiating a plurality of LED light beams into a mouth； a tongue seating unit having a front end part connected to a first connection unit to be seated on a tongue, formed by being divided into upper and lower tongue seating units, and irradiating yellow and red LED light beams to upper and lower jaw tooth parts, a palate part, and a tongue bottom surface； a tooth seating unit positioned between the lip contact unit and the tongue seating unit, and seated on a central tooth； and a power supply means having a cable inserted into a central part of the lip contact unit to supply power to an LED.본 발명은 구강에 착용하여 RED LED와 YELLOW LED를 2개를 1쌍으로 하여 교대로 배치하고, 상기 RED LED와 YELLOW LED를 2~3분 교번 제어를 통해 일정한 파장의 빛을 발산하여 상·하악치아 부위와 혀 부위와 입 천장 등의 염증세포를 초기에 예방하고, 구강내에서 안정적으로 지지될 수 있으며, RED LED를 통하여 구강 혈류증가, 세포재생, 염증감소, 세포활력으로 구내염을 방지하고, YELLOW LED를 통해 해독효과에 의한 항산화 효소 시스템의 개선, 통증완화 및 세로토닌과 비타민 D 생산을 향상시켜 호르몬 시스템에 긍정적인 영향을 주어 감염예방과 구강건강을 증진시키는 것을
