The invention discloses an assembling technology for steel-pipe-end saddles. The assembling technology includes the following steps that 1, preparatory work is carried out; 2, outer walls of to-be-assembled pipe openings are polished to be smooth; 3, corresponding positions of steel-pipe horizontal tie pieces are adjusted; 4, the saddles of the two ends of the steel-pipe horizontal tie pieces areadjusted to be relatively coincident with crossed steel-pipe guiding pipes; 5, the saddles are cut and repaired, and front-end horizontal steel pipe tie pieces are completely assembled; 6, tail-end steel-pipe horizontal tie pieces are assembled; 7, then back-end steel-pipe slant tie pieces are assembled; 8, weld points of the steel-pipe guiding pipes and cup supports are excised and polished to besmooth. According to the assembling technology for the steel-pipe-end saddles, operation is easy and convenient, the problem that saddle pairing is troublesome is solved, and the working efficiency of steel-pipe-end saddle assembling is improved; rating per machine per team and labor are greatly reduced, and the production cost is reduced.