DYSCALCULIA In this research will seek to discover the learning difficulties of mathematics in students with dyscalculia of primary education. The learning of this subject currently presents the highest rate of failure within the school disciplines. Therefore, it is necessary that teachers need to be well-acquainted with child development process. Then, through this work we express two claims: first to treat the need to encourage the existence of learning difficulties in mathematics, in this case the dyscalculia; and, on the other hand, try to know and reduce the mathematical difficulties presented by students with dyscalculia.