The invention provides a method for preparing drinking weak base water and strontium-rich electrolyte raw material water from distilled water obtained in the process of producing salt from well mine brine. The method comprises the following steps: sequentially carrying out decompression treatment, primary filtration, membrane separation treatment, activated carbon adsorption treatment, secondary filtration treatment, sterilization and disinfection treatment and the like on salt-making distilled water. According to the method, the weak base water suitable for drinking, and the strontium-rich electrolyte raw material water which can be used for functional beverage production can be prepared through removing of insoluble solid impurities, sulfides, microorganisms and other substances in the raw material water, and separating or enriching of ions. According to the method provided by the invention, comprehensive utilization of resources can be realized, a new product can be obtained, and the economical efficiency of the process is remarkably improved.