A lamp holder connector includes a lower holder having a bottom board with two positioning pillars protruding upward thereon, and an upper holder covered on the lower holder to together define a receiving chamber. An electrical terminal is fastened in the receiving chamber, and has a base plate with two positioning holes opened therein for inserting the positioning pillars therein, and a pair of clamping plates connected with two opposite side edges of the base plate and facing each other for clamping one end of a lamp therebetween. A top end of each positioning pillar projects upward beyond a top side of the base plate and then is pressed downward by an external jig to have a deformation and form a blocking eave so as to tightly clip the base plate between the bottom board and the blocking eave.