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The exposure of bisphenol compounds in the natural environment causes various problems and poses a severe threat to aquatic life and human health. Herein, we used the coprecipitation-calcination method to synthesize cobalt manganese oxide (CoMn 2 O 4) catalyst for activating peroxymonosulfate (PMS) to quickly and efficiently degrade bisphenol A (BPA), a representative bisphenol compound. The results showed that under pH=7, CoMn 2 O 4 (0.1 g/L) completely removed 0.14 mM BPA within 40 min, and the rate constant was 0.190 min−1. Meanwhile, the effect of different operational parameters and inorganic anions on BPA degradation were also investigated. CoMn 2 O 4 has great environmental tolerance and exhibits excellent performance in a wide pH range (3−9) and in the presence of multiple anions. The CoMn 2 O 4 catalyst has superior catalytic stability to most metal oxide catalysts. After five cycles, CoMn 2 O 4 still showed good reactivity, with a degradation efficiency decrease of 1.5%. The leaching amounts of Co and Mn ions are extremely low, being 0.0077 mg/L and 0.0204 mg/L, respectively. The quenching experiments and EPR test indicated that SO 4 •−, •OH, O 2 •−, and 1O 2 were generated in CoMn 2 O 4 /PMS system, and 1O 2 played a dominant role in BPA degradation. In this work, we have studied a catalyst preparation method, which exhibits excellent catalytic activity, environmental tolerance, and stability, providing a promising choice for practical water environment purification. [Display omitted] • Stable MOF derived CoMn 2 O 4 was synthesized by co-precipitation and calcination method. • CoMn 2 O 4 activates PMS to produce 1O 2 , SO 4 •−, •OH, and O 2 •−. • CoMn 2 O 4 effectively degrades BPA in the presence of various inorganic anions. • The efficiency of CoMn 2 O 4 only decreases by 1.5% after five cycles, and metal leaching is low. [ABSTRACT FROM AUTHOR]