The invention relates to a construction process of non-grouted recyclable steel-pipe piles. The construction process includes: leveling and clearing a site, manufacturing steel-pipe piles, measuring, positioning and setting out, positioning pitch of holes, positioning a drill rig, drilling, sinking the steel-pipe piles in time after clearing the holes, setting recyclable top beams, excavating in the vertical direction, hanging nets among the piles to protect the surface, and recycling the steel-pipe piles. A manufacture method of steel-pipe piles includes threaded connection or welded connection. Each steel-pipe pile comprises a bottom pointed seal cover, a screwed plug, a thin-walled steel pipe, and a top flat seal cover. The steel-pipe piles and anchor cables are arranged crisscross to form a steel-pipe pile supporting system which is locked with the top beams and middle beams; nets are hung among the piles to form the supporting structure. The construction process has the advantages that grouting is not required, deep foundation pit temporary supporting is performed in geologic structures of silt, clay, sand, strong-weathered rock layers, the supporting structure has high rigidity and good supporting effect, the cost is saved, the steel-pipe piles are easy to recycle, and underground metal contamination is avoided.