In order to reduce the hygroscopicity of ammonium dinitramide （ADN）， a double-layer coating strategy was developed to fabricate a double-layer coated composite ADN@18C6@HTFVP via a one-pot method， using 18-crown-6 （18C6） as intermediate tuning layer ADN fluorine-containing polymer HTFVP as outer hygroscopic-resistant layer. Besides， ADN， ADN@18C6， ADN ADN@18C6@HTFVP were characterized ADN analyzed by Scanning Electron Microscopy-Energy Dispersive Spectroscopy （SEM-EDS）， thermogravimetry-differential scanning calorimetry （TG-DSC）， ADN X-ray photoelectron spectroscopy （XPS）. The laser response characteristics of ADN， ADN@18C6， ADN ADN@18C6@HTFVP were investigated via laser ignition tests. The apparent decomposition activation energies of ADN， ADN@18C6， ADN ADN@18C6@HTFVP were calculated via Kissinger ADN Ozawa equations. Results show that the hydrophobic double-layer 18C6@HTFVP structure is uniformly coated on the ADN surface. The thermal decomposition temperature of ADN@18C6@HTFVP increases from 181.46 °C of ADN to 183.79 °C， the impact sensitivity is enhanced from 8 J to 16 J， ADN the friction sensitivity is improved from 80 N to 140 N. Under the conditions of 25 °C， 55% RH， ADN 72 h， the moisture absorption rate of ADN@18C6@HTFVP is 0.38%， which is 94.6% lower than that of ADN （7%）. Calculations reveal that the decomposition reactivity of ADN@18C6@HTFVP is higher than that of ADN. Moreover， ADN@18C6@HTFVP exhibits favorable laser response ADN can be ignited by laser.