An LED tube lamp, comprising a lamp tube; two end caps, configured to be respectively attached to two ends of the lamp tube, one of the end caps having a first conductive pin (301/501) and a second conductive pin (301/502) disposed thereon and the other end cap having a third conductive pin (301/503) and a fourth conductive pin (301/504) disposed thereon for conducting an external driving signal, allowing the external driving signal to flow between at least one of the first pin and the second pin and at least one of the third pin and the fourth pin; a bendable circuit sheet, attached to an inner circumferential surface of the lamp tube, and including at least one conductive layer; and a power supply module, comprising a first rectifying circuit, coupled to the first pin and the second pin; a second rectifying circuit, coupled to the third pin and the fourth pin, for rectifying the external driving signal concurrently with the first rectifying circuit to produce a rectified signal; a filtering circuit, coupled to the first rectifying circuit and the second rectifying circuit, and for filtering the rectified signal to produce a filtered signal; a driving circuit, coupled to the filtering circuit, to receive the filtered signal and then perform power conversion for converting the filtered signal into a driving signal; an LED module, disposed on the circuit sheet and including a plurality of LED units connected in series, in parallel, or in both series and parallel, and the LED module being coupled to the at least one conductive layer of the circuit sheet to receive the driving signal; and an auxiliary power module, coupled to the LED module, for providing a current through the LED module when providing of the driving signal to the LED module is stopped; wherein the auxiliary power module includes an auxiliary power positive terminal, an auxiliary power negative terminal, an energy storage unit, and a voltage detection circuit, the auxiliary power positive and negative terminals are coupled to the LED module, and the voltage detection circuit is configured to detect a level of signal at the auxiliary power positive and negative terminals in order to determine whether to release energy or power of the energy storage unit to the LED module through the auxiliary power positive and negative terminals; wherein the filtering circuit further includes a capacitor and an inductor connected in parallel and between one of the first and second pins and the first rectifying circuit to allow the external driving signal to be transmitted there between and to present a peak equivalent impedance to the external driving signal at a specific frequency. a lamp tube; two end caps, configured to be respectively attached to two ends of the lamp tube, one of the end caps having a first conductive pin (301/501) and a second conductive pin (301/502) disposed thereon and the other end cap having a third conductive pin (301/503) and a fourth conductive pin (301/504) disposed thereon for conducting an external driving signal, allowing the external driving signal to flow between at least one of the first pin and the second pin and at least one of the third pin and the fourth pin; a bendable circuit sheet, attached to an inner circumferential surface of the lamp tube, and including at least one conductive layer; and a power supply module, comprising a first rectifying circuit, coupled to the first pin and the second pin; a second rectifying circuit, coupled to the third pin and the fourth pin, for rectifying the external driving signal concurrently with the first rectifying circuit to produce a rectified signal; a filtering circuit, coupled to the first rectifying circuit and the second rectifying circuit, and for filtering the rectified signal to produce a filtered signal; a driving circuit, coupled to the filtering circuit, to receive the filtered signal and then perform power conversion for converting the filtered signal into a driving signal; an LED module, disposed on the circuit sheet and including a plurality of LED units connected in series, in parallel, or in both series and parallel, and the LED module being coupled to the at least one conductive layer of the circuit sheet to receive the driving signal; and an auxiliary power module, coupled to the LED module, for providing a current through the LED module when providing of the driving signal to the LED module is stopped; wherein the auxiliary power module includes an auxiliary power positive terminal, an auxiliary power negative terminal, an energy storage unit, and a voltage detection circuit, the auxiliary power positive and negative terminals are coupled to the LED module, and the voltage detection circuit is configured to detect a level of signal at the auxiliary power positive and negative terminals in order to determine whether to release energy or power of the energy storage unit to the LED module through the auxiliary power positive and negative terminals; wherein the filtering circuit further includes a capacitor and an inductor connected in parallel and between one of the first and second pins and the first rectifying circuit to allow the external driving signal to be transmitted there between and to present a peak equivalent impedance to the external driving signal at a specific frequency.