Landfills are important “secondary sources” of per- and polyfluoroalkyl substances (PFAS) release to the environment. This study systematically reviewed the literature published between 2000 and 2025 and compiled a database of mean PFAS concentrations in landfills and surrounding environmental media across 15 provinces China, covering 56 landfill sites and yielding 1569 data entries. Based on statistical median concentrations, the results showed that: (1) 66 PFAS congeners were detected in leachate with total concentrations ranging from 3.05×103 to 1.58×10? ng/L. Short-chain alternatives including PFPrA (9350 ng/L), 5:3 FTCA (2880 ng/L), and PFBS (2025 ng/L) exceeded the traditional PFOA (405.30 ng/L) and PFOS (109.05 ng/L). PFBS concentrations in eastern coastal regions were significantly higher than those in central and western areas. (2) In surrounding environments, PFOA showed the highest concentrations in soil, surface water, and groundwater (8.38 ng/g, 77.99 ng/L, and 19.21 ng/L, respectively). Multiple precursors and novel alternatives were additionally detected in groundwater. The volatile precursor 6:2 FTOH (1300 pg/m_³) in air was 2-4 orders of magnitude higher than ionic PFAS. (3) Ecological risk assessment indicated that PFOS (RQ=0.84-1523.5) and PFOA (RQ=0.26-145.1) in leachate posed medium to high risks, while PFAS in surrounding surface water and groundwater showed relatively low risks with RQ values below 1. This study provides scientific basis for PFAS pollution monitoring and control at landfills.