Abstract: An LED lamp tube is applied to satisfy a light source requirement and is used primarily to replace an existing conventional lamp tube, achieving an energy saving requirement. Plural LEDs are used as a luminous source which is assembled in a light permeable tube body, fitted with a drive circuit control module, so as to form the LED lamp tube. In addition, the LED lamp tube can be connected serially in plural sets depending on a length of the tube body, so as to comply with a light source requirement in various environments.