Abstract:  Triply periodic minimal surface (TPMS) structures are widely used in lightweight and impact-resistant applications due to their excellent specific strength, specific stiffness, and energy absorption properties. To reveal the influence of different structural configurations on mechanical properties, this paper designs fully parametric controllable sheet-TPMS structures and establishes quantitative mathematical models between design parameters and porosity as well as specific surface area, in which a morphological control parameter C₀ is introduced. Sheet-TPMS structures (sheet-P and sheet-IWP) with different C₀ values are fabricated using selective laser melting (SLM). Combined with quasi-static compression tests and finite element analysis (FEA), the effects of morphological on mechanical properties are investigated. The results reveal that structural configuration exert remarkable impacts on mechanical properties. For the sheet-P structure with C₀ = -0.4, the maximum increments of yield strength and Young’s modulus reach 11.8% and 13.6%, respectively. The sheet-IWP structure at C₀ = 0, delivers the optimal mechanical performance, with maximum increases of 19.4% in yield strength and 11.3% in Young’s modulus. This work can identify the 1structural configuration of TPMS with the superior mechanical properties, providing a theoretical basis for subsequent mechanical performance optimization.