Abstract: Mineral water is abundant in Qinghai province. To exploit and utilization, it is needed to elucidate the hydrogeochemical character and formation mechanism of mineral water. In this study, to clarify the mineral water hydrogeochemical type, character and action, a comprehensive analysis was conducted using multivariate statistics based on the collected mineral spring water data of Qinghai Province in 2021. Results shows that: ①Mineral water is classified as Sr and complex type.② The main hydrogeochemical types of mineral water are HCO₃-Ca·Mg, HCO₃·SO₄-Ca·Mg and HCO₃-Ca. ③The main ion in mineral water are Na⁺+K⁺、Ca²⁺, and HCO₃⁻. The research results enhance the understanding formation of mineral water in Qinghai Province.