It is studied that effect of temperature, passes, thinning rate and feed ratio for alien piece with large aspect ratio during spinning formed, though processing test and analysis of microstructure and mechanical properties. It is respectively optimized that characteristic temperature is 370~420 ℃, deformation passes is 10~12 passes, thinning rate both every pass is 20~25 % and whole process is 35~50 %, and feed ratio of ordinary spinning is 2.0~2.5 mm/r, and feed ratio of strong spinning is 1.3~1.8 mm/r. It is achieved that alien piece with large aspect ratio spinning formed directly from sheet material which is undergoed only one time card loading. The process aboved not only improved production efficiency significantly, but also simultaneously fufil requirements of controling shape and properties. The wall thickness difference of alien piece with large aspect ratio is no greater than 0.2 mm, and the unilateral gap between inner profile and theoretical model is not higher than 0.1 mm. Relatived to the original plate, the ultra tensile strengrh and elongation of alien piece with large aspect ratio basically unchanged, and the yield strength increased 10.1 %.