The embodiments of the invention disclose a method for preparing a zinc chloride solution by using a germanium distillation raffinate, and applications thereof. The method comprises: evaporating a germanium distillation raffinate containing zinc chloride to obtain a saturated liquid containing zinc chloride; adding a precipitating agent to the saturated liquid containing zinc chloride to remove impurities; and filtering, and clarifying to obtain the zinc chloride solution. According to the present invention, the method comprises evaporating the germanium distillation raffinate and hydrolyzingthe precipitate to prepare the zinc chloride solution, wherein the germanium distillation raffinate is subjected to evaporating and dilute acid concentration to separate dilute hydrochloric acid so asto be reused, and by further hydrolyzing the precipitate, ferric chloride solution can be obtained while the zinc chloride solution is separated so as to achieve the recycling effect; and the whole process does not require lime and the like to treat waste residue so as not to cause environment pollution.