A method of manufacturing a needle-equipped outer tube includes a preheating step of heating a joint member 4 inserted in a distal end connecting section 22 of an outer tube member 2, with a needle 3 being inserted or inserted and fixed in a needle insertion hole 42, to a temperature at or below a softening point of a material forming the outer tube member 2, and a joint member welding step, performed after the preheating step, of thermally welding the j oint member 4 to the distal end connecting section 22 of the outer tube member 2 with a distal end sleeve 43 of the joint member 2 pressed toward the proximal end of the joint member 4 by a pushing member 17 with a pressing force of 4 N to 30 N.
