Coprime Graph is a geometric representation of a group in the form of undirectedgraph. The coprime graph of a group G, denoted by $\Gamma_G$ is a graph whose vertices are all elements of group G; and two distinct vertices a and b are adjacent if and only if $(|a|,|b|)=1$. In this paper, we study coprime graph of integers modulo n group and its subgroups. One of the results is if n is a prime number, then coprime graph of integers modulo n group is a bipartite graph.

One interesting topic in algebra and graph theory is a graph representation of a group, especially the representation of a group using a non-coprime graph.  In this paper, we describe the non-coprime graph of integers modulo  group and its subgroups, for  is a prime power or  is a product of two distinct primes.

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