A power transformation apparatus between DC light element and ballast includes a first fluorescent emulation module, a second fluorescent emulation module and a rectifier module; wherein the first fluorescent emulation module includes two input current terminals for electrically connecting to first set of AC output terminals of the ballast, the second fluorescent emulation module also includes two input current terminals for electrically connecting to second set of AC output terminals of the ballast; two input terminals of the rectifier module are electrically connected respectively to any output terminal of first set of AC output terminals and second set of AC output terminals. The rectifier module outputs a rectified DC to supply to the DC light element as a power source.