Complex numbers are an obligatory content of mathematics education. However, almost without exception, in all degrees of education their application is restricted to geometrical interpretation of the complex number and solving algebraic equations. It is well known that opportunities for mathematics teaching integration, offered by specific content topics, are not fully utilized, especially in higher degrees of education. In this paper, we will present program content that can significantly improve integration of teaching, and improve the training of future mathematics teachers. Needles to say, we can achieve the last with the introduction of a new teaching course Geometry of complex numbers, as well as with the study of the mentioned content within the existing courses in elementary mathematics found at the majority of faculties that prepare mathematics teachers.