The utility model discloses a cinerary jar with a reinforcing structure, which comprises an outer jar and an outer cover. The outer jar is provided with a containing tank which is upwards opened, and the outer cover is covered on an opening of the outer jar. The cinerary jar with a reinforcing structure also comprises an inner jar, an inner cover and a protective seat. The inner jar is provided with an opening which is upward, and the inner jar is contained in the containing tank of the outer jar. The end edge of the opening of the inner jar is provided with a side edge which is used for being extended to be covered at the outer circumferential edge of the opening end of the outer jar. The inner cover is sealed and covered on the opening of the inner jar. The protective seat is covered at the bottom of the outer jar, and a wall edge which is used for being covered at the outer circumferential edge of the lower end of the outer jar is upwards and convexly extended at the circumferential side of the protective seat. In this way, the upper end edge and the lower end edge of the outer jar can be covered in the side edge of the inner jar and the protective seat so that the upper end edge and the lower end edge with weaker intensity of the outer jar can not easily generate lack and damage due to transportation and careless collision.