The invention discloses an elastic buckle and a production method thereof. The buckle comprises a backing and protrusions on the backing, each protrusion comprises a rod part and a cover part located at the top end of the rod part, each cover part is provided with at least one extension part laterally extending out of the rod part, and each extension part comprises an elastomer; by means of the soft and comfortable characteristics of the elastomers, the prepared buckle can be used for disposable sanitary products such as paper diapers, when the buckle is matched with a ring part for use, under the same peel strength, the noise is low, and the soft skin-friendly property is good.