行为人主观上具有重婚的故意,客观上实施了重婚的行为,符合我国刑法重婚罪的构成要件,就构成重婚罪。民政局因违反法律的强制性规范导致其为当事人颁发的结婚证无效。尽管现阶段事实婚姻不为我国婚姻法所承认,但是事实重婚者并不必然逃离重婚罪的刑事处罚。 The perpetrator subjectively has the act of bigamy intentionally and objectively has implemented the act of bigamy, which is in line with the constitutional requirements of the bigamy of criminal law in our country and constitutes the bigamy. Civil Affairs Bureau because of the violation of the mandatory norms of the law led to the marriage certificate issued by the parties is invalid. Although the factual marriage is not recognized by the Marriage Law of our country at the present stage, the fact that bigamy does not necessarily escape the criminal punishment of bigamy.