“…The existence periodic solutions and homoclinic solutions of different kinds of singular equations has been proposed by many authors, see [3], [5], [6], [7], [11], [13], [20], [27], [28], [33] and the references therein. Singular problems with impulsive effects have been scarcely studied, see [1], [12], [23], [24]. For example, in [12], the author and Luo considered the following first-order singular problems:…”