An LED lamp tube capable of rectifying and stabilizing voltages includes an LED component. Two ends of the LED lamp tube respectively include two conductive pin assemblies, a polarity conversion module, a suppressor, and a voltage buck-booster module. The polarity conversion module includes two voltage conversion devices connected to the conductive pin assemblies. A set of capacitors is electrically connected between each of the voltage conversion devices to operate a circuit in an electronic rectifier to compensate and stabilize an input voltage.