The paper attempts to present the freezing point depression of a solution with a non-volatile solute. The information such as the effect of solute concentration on freezing point depression and the importance to many natural phenomena and technological applications will be covered in this paper. When a non-volatile solute is dissolved in a solvent, the freezing point of the solution is lowered. The freezing-point depression has many practical applications such as using salts to remove ice from roadways, using ethylene glycol to de-ice an aircraft or to keep the coolant from freezing in automobile radiators, the survival of fish and other cold-blooded sea animals at temperatures below 0oC …It is hoped that useful information will help you to know more about the properties of a solution.