Abstract: A funnel with a liquid level index is provided beneath the neck thereof with a plurality of extension rods, and a plurality of openings are formed between every two extension rods; an indicator with a floating member and an upper shank is provided under the neck within the extension rods. The indicator is provided on the top end thereof with an easy identified index; thereby, when the funnel is added with solution-up to a level fully filling a container, the bottom floating member of the indicator is raised to move the index on the indicator; by raising of the index, a user determines whether the container is fully filled with liquid or determines the degree of fullness of liquid.