Optical fiber main distribution frame having integrated function of welding and distribution, light splitter function and on-line testing function

The utility model relates to an optical fiber main distribution frame having an integrated function of welding and distribution, a light splitter function and an on-line testing function comprises a rack, wherein the rack has a front space and a back space, the front space is provided with a plurality of in-line modules arranged up and down along the rack, the back space is provided with a plurality of transverse modules arranged up and down along the rack, an output end of each transverse module is provided with two ports, one port is connected with a photoelectric conversion device and then is connected with a user, and the other port of the transverse module is connected with a test device. The in-line modules have optical fiber welding and distribution functions, the transverse modules have the function of a light splitter and an on-line testing function, so the optical fiber main distribution frame has a plurality of functions. Besides, wiring of the optical fiber main distribution frame is standard and tidy, so the optical fiber main distribution frame is easy for construction and management.