Weighing bottle with marked lines used for measuring density

The utility model relates to a weighing bottle with marked lines used for measuring density, which comprises a bottle body and a bottle stopper. The weighing bottle is characterized in that the bottle body and a tapered standard matting joint are welded into a whole; a ground glass stopper is provided; 2 to 3 marked lines are engraved on the outer side of the bottle body; and nominal capacities are printed beside the marked lines. The density can be acquired through measuring the quality difference and the volume difference of the tested liquid or powder when a second marked line and a first marked line, or a third marked line and the first marked line are achieved. The weighing bottle with marked lines has the characteristics of wide measuring range, simplicity and convenience in operation, various application, easiness of cleaning, and low manufacturing cost.