Abstract: This study primarily investigates the effects of two heat treatment processes, common annealing and simple double annealing, on the properties and microstructure of TC18 titanium alloy plate. The aim is to find a simplified alternative to the complex double annealing process（including intermediate slow cooling） recommended by GJB 3763A-2024. The common annealing process involved holding within the temperature range of 795～875℃for 2 hours followed by air cooling（AC）. The simple double annealing employed a two-stage heat treatment: the first stage involved holding at 795～875℃ for 2h followed by AC, and the second stage involved holding at 550～650℃for 4h followed by furnace cooling（FC）. After heat treatment, room temperature tensile tests and microstructural analysis were performed on the plate. The results indicate that the plate treated with common annealing exhibited lower strength and poorer plasticity, rendering it unsuitable as a replacement. However, after simple double annealing treatment, three sets of process parameters were identified（795℃×2h/AC+600℃×4h/FC, 795℃×2h/AC+650℃×4h/FC, 835℃×2h/AC+650℃×4h/FC） whose comprehensive strength-plasticity properties were equivalent to those achieved with the complex double annealing process recommended by GJB 3763A.