The paper introduced the properties of pulsed power source based on fast linear transformer driver (FLTD), and summarized the latest developments of FLTD-Z module and the conception design of pulsed power source based on FLTD such as Z-POP for verifying the availability of IFE, and the next generation direct-driven pulsed power source of the current of 60 MA, and the voltage of 6 MV or the current of 90 MA and the rise time of the current of 100 ns for ICF(inertial confinement fusion)and IFE(inertial fusion energy). The paper also analyzed the crucial core technology for further investigation.