Based on the internal powder feeding technology, laser forming of variable laserhead space posture/direction in the laser accumulation process is realized with 6-axis robot. The effects of continuously variable spatial angle of substrate on the cladding morphology are studied. The difficulties and key technologies of spatial variable posture in laser accumulation process are analyzed. Laser forming experiment of a metal part with continuously varying spatial angle of laserhead is conducted. The formed part microstructure, thickness and microhardness are analyzed. The experimental results show that the offset of cladding layers increase and the max value of offset is 0.06 mm. The difficult of space variable posture laser accumulation are solved effectively by tangential layering technology, axis offset compensation technology and cladding layer growth adaptive technology solve. The formed part combines well with the substrate metallurgy. The microstructure of the“vase”is dense and uniform relatively, and the overall microhardness value changes small. At large angle changes, the microstructure of formed parts has some porosity and slag, and with a larger microhardness decline. At small angle changes, microhardness has no clear downward.