Abstract:The text introduces the damaged status of casting steel cooling stave and analyses its causation according to production practice of Jisteel’s No.4 BF. It puts forward a series of correlative measures, for example, ameliorating the material and frame of cooling stave, improving water quality, increasing soft water flux, strengthening BF examination, optimizing BF operation, and so on. They have a definite guiding significance to broaden the application of casting steel cooling stave according to 4BF practice.