Hydrogen energy plays a key role in achieving “carbon neutrality.” However, due to its very low volumetric energy density, hydrogen faces challenges in storage and transportation. To solve this issue, ammonia is considered a promising hydrogen carrier, as it has a high hydrogen content, is easy to compress and transport, and produces zero COx emissions. This study explored the performance and stability of a silica membrane reactor to cater the need of completely switching ammonia to hydrogen. A six-layered membrane was selected as the optimum in terms of separation and selectivity, delivering a hydrogen permeance of 2.37 × 10-6 mol m−2 s−1 Pa−1 and a H2/N2 perm-selectivity of 66.77 at 500 ℃. The membrane reactor demonstrated significant advantages over traditional reactor enhancing the hydrogen production from ammonia in more than 100 % due to the breakthroughs in thermodynamic equilibrium caused by in-situ hydrogen separation. Under the conditions of 500 °C, 0.3 MPa pressure, and a gas hourly space velocity of 30 ml g-1h−1, the ammonia conversion reached 90.12 %, the hydrogen recovery was 94.75 %, and the hydrogen yield was 1.60 ml min−1 with a hydrogen concentration of 98.80 vol%. The membrane reactor performance remained stable during a continuous 10-hour test, showing no significant structural modification as observed by Scanning electron microscope. The use of silica membrane reactors to enhance ammonia decomposition for hydrogen production provides a theoretical basis and technical reference for the further practical application of silica membranes.