The　incongruent　dissolution-precipitation　behaviors　of　8YSZ　(8　mol%　yttria-stabilized　zirconia)　ceramics　during　cold　sintering　process　is　studied　in　this　paper　by　changing　the　pH　of　liquid　media.　The　different　solubility　of　Y3+　and　Zr4+　at　the　same　lattice　position　causes　the　disparate　dissolution　behaviors,　and　results　in　incongruent　precipitation.　Compared　with　acidic　or　alkaline　solution,　neutral　solution　is　more　conducive　to　the　incongruent　dissolution-precipitation　process,　and　the　concentration　ratio　of　dissolved　Y3+　and　Zr4+　can　reach　∼6385.　The　incongruent　dissolution-precipitation　process　facilitates　the　formation　of　neck　structure　and　promotes　the　ionic　migration　and　diffusion　at　the　subsequent　high-temperature　sintering　process,　which　improves　the　mechanical　properties　and　electrochemical　properties　of　8YSZ　ceramics.　This　work　reveals　the　principle　of　incongruent　dissolution-precipitation　process　of　zirconia-based　ceramics,　and　it　is　of　significance　for　selecting　suitable　liquid　media　to　control　the　incongruent　dissolution-precipitation　behaviors　in　cold　sintering　process　to　prepare　high-performance　zirconia-based　ceramics.　©　2021　Elsevier　Ltd