The present invention relates to a portable cleaning toothbrush case (1) using a UV LED and a disinfection and sterilization method. A first PCB (21) is installed in the toothbrush case (1), and a second PCB (22) is fitted and connected to one end of the first PCB (21) in a direction orthogonal to the second PCB (21). A battery (23) is installed at the other end of the PCB (22), and a first battery spring (41) is installed at the end of the second PCB (22) on one end side of the battery (23). A second battery spring (42) is installed at the opposite end of the battery spring (41), and a battery (23) is placed between the first battery spring (41) and the second battery spring (42). It is sandwiched and installed, the second battery spring (42) and the second PCB (22) are connected via an electric wire (5), and the LED (6) is installed on the first PCB (21). A plurality of switch units (71, 72) are installed in the second PCB (22). The method is that when the upper lid (14) is closed, the magnet (145) in the upper lid (14) pushes down the magnet (723) in the switch unit (72) in the second PCB (22) by the principle of isopolar repulsion. The magnet (723) and the PC plastic lid (721) in the switch unit (72) slide downward into the concave holes in the toothbrush case (1) to compress the telescopic column (724) of the switch and further compress the switch unit (712). 72) is turned on, the light-shielding lid (8) blocks UV light, the second PCB (22) emits the LED (6) to drive it for disinfection and sterilization, and the upper lid (14) is opened. Then, the pressure applied to the magnet (723) in the switch unit (72) in the second PCB (22) disappears, and the telescopic column (724) of the switch due to its own elastic force causes the magnet (723) in the switch unit (724). And the PC plastic lid (721) is slid upward into the recessed hole in the toothbrush case (1) and pushed up so that it returns to its original position, thereby turning off the switch unit (72) and t
