The invention provides a separating funnel used for tests. A bottle body of the separating funnel is provided with a temperature gauge and scale display lines. In the separating funnel, the temperature gauge and the scale display lines are additionally arranged on the bottle body of the separating funnel so that the volume of solute and solvent can be monitored at all times, the temperature and the change of solution is monitored simultaneously, the amount of the solute and the solvent in the solution is calculated at all times, and the accuracy of an experiment and for obtaining data is improved when the separating funnel is used for extracting the solute in a chemical experiment and a biotic experiment.