The invention discloses a method for manufacturing an austenite stainless steel thin strip for an electronic product shell. Due to an alloy design of austenite stainless steel, elements generate a synergistic effect; on the basis of a large number of experiments, process parameters of smelting, hot rolling and cold rolling are optimized; proper temperature and a proper reduction rate of a smelting and B adding process, the hot rolling, the cold rolling and annealing are controlled; the optimization of the parameters in the manufacturing method is favorable for guaranteeing that the stainless steel thin strip reaches an estimated performance index, namely the hardness is greater than 280 Hv; the level of impurities is lower, namely (A+B+C+D ) is less than or equal to 2.0; needle holes and concave troughs are prevented after polishing, so the smoothness of a mirror surface is realized, and the magnetic inductivity is less than 0.6 Gs/Oe; therefore, the manufacturing method meets a requirement of an electronic element, particularly the higher and higher requirement in the field of communication devices, such as a mobile phone shell and the like.