Ink-saving ink bottle

The utility model relates to an ink-saving ink bottle. The bottle bottom of the ordinary ink bottle is upwards convex, the ink bottle together with ink are thrown away under the condition that more ink is left, which is a waste of ink from the angle of ink. The ink bottle provided by the utility model is composed of a bottle body and a bottle cap, and is characterized in that the inner bottom face of the bottle body is downwards concave, namely the inner bottom face of the bottle body is concave from the edge to the center. The ink bottle with the bottle bottom can cause more ink which is left in the bottle to be sucked by a pen, and thus the problem of ink waste is reduced.