This article presents a facile method to synthesize NaX zeolite film on paper-like sintered stainless-steel fiber, which can be used as a potential support for structured catalysts. Unlike the secondary growth method, in which the nano-sized zeolite seeds should be synthesized and attached to the support using the appropriate procedure, the facile method is much easier to operate. It involves a simple pretreatment with 3-aminopropyltrimethoxysilane (APTMS) followed by in-situ hydrothermal synthesis. The synthesis conditions such as the molar composition of initial solution, pretreatment, aging duration, crystallization temperature, crystallization duration, synthesis times play pivotal roles in the growth of zeolite film. We systematically investigated these parameters. SEM and N-2 adsorption/desorption were used for characterizations. It was found that film growth is extremely sensitive to synthesis conditions. The modification of molar composition resulted in the change in crystal size and the appearance of impurity phase (LTA, P-type zeolite and the amorphous); the pretreatment of APTMS led to even distribution of zeolite crystal on the surface; longer aging duration contributed to the growth of pure phase FAU crystal; lower crystallization temperature triggered incomplete crystallization while higher temperature gave rise to the crack of zeolite layer; both the shorter and longer crystallization duration caused impurity phase; increasing synthesis times thickened the zeolite film. Additionally, the dense P zeolite film was also prepared under various conditions. (C) 2017 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.