Interfacial solar vapor generation (ISVG) technology has been considered a promising and sustainable strategy for seawater desalination and wastewater treatment. However, its practical application is greatly limited due to severe salt accumulation and poor long-term evaporation stability. Herein, an all-cellulose-based wicking fabric (CB@CA/CF) is fabricated via a breath figure template (BFT) method for high-performance and stable desalination. The abundant porous structure of carbon black@cellulose acetate (CB@CA) endows the evaporator with high light absorption (∼96.9%) and rapid steam escape. The hydrophilic CA network also changes the hydration state and greatly reduces the water evaporation enthalpy. More importantly, the unique double-layer porous structure of CB@CA and cotton fabric (CF) produces a rapid antigravitational wicking effect, providing sufficient water supply for vapor generation and preventing salt accumulation on the evaporator surface. As a result, the CB@CA/CF evaporator can achieve high evaporation rates of 2.08 kg m