Ampoule with flat section

The utility model relates to an ampoule with a flat section, which comprises a bottle bottom, a bottle body, a shoulder part, a neck part, a bubble part and a thread part which are arranged from bottom to top, and the shape of the curve of the shoulder part is a gradually-changing curve which is concave from bottom to top and then convex from bottom to top, so that the ampoule with the flat section can meet the use requirements of domestic and national standard glass ampoules. The breaking force test of the ampoule bottle is met, the section flatness after breaking of the neck of the glass ampoule bottle is improved, the size consistency of the breaking force needed by breaking of the neck of the glass ampoule bottle is improved, the utilization rate of the ampoule bottle in liquid injection production is improved, the safety of the ampoule bottle in use is guaranteed, medical accidents are reduced, and the safety of the ampoule bottle in use is improved. The utility model is simultaneously suitable for other