The invention discloses an evaporation and concentration method for a corrosive liquid material, which relates to an industrial concentration and production process. After exchanging heat with a high-temperature heat transferring medium, the corrosive liquid material is evaporated to remove high-temperature steam, and then the concentrated liquid material is obtained; and after exchanging heat with a low-temperature heat transferring medium, the high-temperature steam forms condensed water which is then drained through a water pump. The corrosive liquid material can be evaporated under a working condition withof lower temperature by the method, so on the one hand, the condensation temperature of the steam of a freezing medium can be reduced and a coefficient of heating performance is improved, and on the other hand, the corrosive material is not decomposed. When the method is compared with the prior art, energy resource can be greatly saved, and chlorate corrosive materials, such as sodium hypochlorite, potassium perchlorate, sodium chlorate, potassium chlorate, magnesium chlorate and the like can be concentrated by the method.