The present invention provides a manually-operated nose-expanding machine of thin-wall stainless steel pipe for machining nose-expanded thin-wall stainless steel pipe connection nose. Said nose-expanding machine includes the following several portions: upper die whose interior has first step and second step; lower die whose interior is equipped with first step and second step; die-pressing screw mandrel, it is used for applying action to upper die and lower die; conical rolling cone head, it is used for fitting with nose of stainless steel pipe; die-pressing screw mandrel, it is used for applying acting force to described conical rolling cone head; die-pressing frame, it is used for supporting the described die-pressing screw mandrel; and core die, it has third step and fourth step, in the rear end of said core die a conical roller is placed. |