The temporomandibular joint (TMJ) is one of the most complex joint in the body, the area where the mandible articulates with cranium. It is formed by the mandibular condyle fitting into mandibular fossa of the temporal bone. Separating these bones from direct articulation is the articulating disc which is composed of dens fibrous connective tissue. Functionally, the articulating disc serves as non ossified bone that permits the complex movements of the joint. Because the articulating disc functions as a third bone, the craniomandibular articulation is considered as compound joint. Disorders of this joint are called as temporomandibular joint disorder having typical signs and symptoms. Although there is various treatment modalities for treating this joint disorder which include conservative treatment modality and surgical treatment modality. This review article highlights the temporomandibular joint disorder and its various classification and treatment modality.