The invention discloses liquid treatment equipment. The liquid treatment equipment comprises an evaporation tank and a vacuum evaporation system, wherein an evaporation chamber is formed in the evaporation tank; the vacuum evaporation system comprises a purity detector. Efficient vacuum distillation of the evaporation tank can be realized through a cooperative function of the vacuum evaporation system and a hot and cold circulation system, meanwhile, the evaporation tank integrates a heating function and a vacuum condensation function of steam, the structure is compact, and the evaporation efficiency is high.