Plant breeders now consider doubled haploid (DH) technology as one of the most exciting advances in their field. Generally, self-pollination takes many generations to develop truebreeding lines, but DH technique makes it possible to get completely homozygous lines in just single step. By producing completely homozygous lines in a one generation, reduces the time required for varietal development and boosts breeding efficiency. Different methods such as anther culture, microspore culture, and distant hybridization followed by chromosome elimination are used for DH plant development. These techniques have been successfully adopted in several crops, wheat, maize, rice, barley, and brassica. In this article, we aim to explain how DH works, the main methods used, and some real examples of its success.