The invention discloses a terminal connection structure of an SFF 2*N series
optical module. The terminal connection structure comprises a plurality of terminal modules and at least one conductive column, wherein the plurality of terminal modules are overlapped together, grounding terminals are embedded, molded and fixed on insulating blocks of part of the terminal modules, through holes are formed in fixing parts of the grounding terminals, and elastic sheets are integrally molded and connected to the edges of the through holes; and the conductive column is provided with a
contact plane, theconductive column is separated from a
signal terminal and penetrates through the through hole, and the elastic piece elastically abuts against the
contact plane to be connected in a conducting mode. The grounding terminal is provided with the through hole, the edge of the through hole is connected with the elastic piece in an integrated manner, and each conductive column is provided with the
contact plane, so that the grounding terminals and the conductive columns are conducted and connected on the contact planes through elastic
extrusion of the elastic pieces, the dimensional tolerance does not need to be controlled quite accurately, the
processing cost can be reduced, the contact stability is improved, and the
crosstalk problem can be effectively improved.