This invention proposes a high-power LED light base structure, which has a base plate, and at least one set of V-shape mounting module that comprises first and second slant faces for mounting LED purposes. And, there are upper and lower horizontal plates set between the first and second slant faces so as keep LED modules properly spaced. It is in such manner that the beams emitted from LED modules mounted in first and second slant faces interlace each other so as to have enhanced and uniform brightness.