Abstract: Spinning and weaving were carried out with organic/inorganic flame-retardant viscose fibers along with chemical treatment under various conditions,and the Al content in the organic/inorganic flame-retardant viscose fibers before and after treatments were determined by atomic absorption spectrometry.According to the variations of Al content,the influence of spinning,weaving and chemical treatment on flame-retardant property of the fibers was analyzed.The result demonstrated that different chemical agents,and spinning and weaving processes have impact on the Al content in organic/inorganic flame-retardant viscose fibers,of which,alkali is the most important factor,and acid,oxidant,reducing agent,salt,as well as spinning and weaving lower Al content slightly.