China's one-child policy, introduced in the late 1970s, has been in effect for over three decades. This article reviews China's low fertility rate and the implementation of this stringent birth control policy in the context of low fertility. First, China's fertility intention, behavior, and low fertility level trend are presented. Then, the official response to the low fertility level and the consequent misguided policy-making are investigated. Next, various obstacles to the abolishment of the strict birth control policy are discussed, including national leaders' authority, related family planning regulations and laws, the inertia of this basic state policy under the auspices of the common good, the displacement of the family planning systems, and the necessity for social maintenance fees to keep grassroots governments in operation. After discussing the recent reform of this birth control policy in 2013 and the subsequent results, the incentives for a universal two-child policy are elucidated. These include the official acknowledgment of low fertility, the effect of birth control policy on fertility decline, the reactions of the general public, the attitudes of grassroots family planning cadres, the appeal from scholars, international experiences, the merging of population and family planning commissions, and national leaders' attitudes. The paper concludes with an analysis of the cost of this birth control policy over the past decades.