This thesis is focus on Spanish interjections, especially the group of proper?s ones. According to the information exposed, we have created one didactic unit for teaching this type of units to foreign Spanish students. In order to carry out the study, firstly, we have stablished their phonetic and phonological, morphological, syntactical and semantic-pragmatic properties. Moreover, we have developed a corpus with the proper interjections from Spanish language, taking from the literature and our own introspection. We have selected the most productive of them from the Spanish corpus: CREA and CORPES XXI. This units have been described according to theirs pragmatic functions and, secondly, to theirs phonetic features and their discursive position. This information is based in the analysis of examples from CORPES XXI. Finally, we have proposed activities for their learning as foreign language. All of them are for the levels B2-C1, according to MCER. They are organised in three sessions. This didactic unit develop all the skills, but mainly the oral ones: listening and oral production.