1979

One-child policy

China publicly shifts toward a one-child family policy

China’s signature population policy did not begin with a law. It arrived through editorials, a speech, provincial rules and, a year later, an Open Letter to Party members.

There was no enactment day

Nothing in 1979 was signed into force. In January, People’s Daily and Xinhua publicly called for one child per couple — two at most — and repeated proposals to reward one-child pledges and penalize larger families.

In June, People’s Daily reported family-planning leader Chen Muhua’s call to move the focus of birth-control work toward one-child families. A scholarly reconstruction dates the announcement encouraging all couples to restrict themselves to one child to January 1979.

Central advocacy, provincial rules

The policy was never a single national statute or government order. Provincial authorities translated central advocacy into enforceable quotas, incentives, penalties and exceptions, and those varied by locality, hukou status, ethnicity and family circumstance.

The Central Committee’s Open Letter of 25 September 1980 is the usual marker for the nationwide launch. It asked Party and Youth League members to lead by having one child; it was not itself a one-child law.

What the policy is credited with, and what it did not do alone

Fertility had already fallen from 5.8 children per woman in 1970 to 2.8 in 1979, under the earlier “later, longer, fewer” campaign — so the policy cannot be assigned the whole decline.

The familiar figures that 35.4 percent of the population faced a strict one-child rule and 53.6 percent a conditional 1.5-child rule come from late-1990s local-policy data, not from 1984.

On the sex ratio, research links the fertility constraint to elevated ratios, but son preference and access to prenatal sex selection were essential interacting causes rather than incidental ones.

Sources

Researched 24 Aug 2026 8 sources not yet audited Date disputed

How this was checked

Researched from the web into a fact sheet and rewritten from that sheet. This article has not yet had an independent model audit. How the pipeline works →

Date disputed. Sources disagree about when this happened.

What the sources leave uncertain

Scholars legitimately use both 1979 and 1980 as starting points. The one-child emphasis was publicly announced and promoted in 1979; the Central Committee's nationwide Open Letter appeared on September 25, 1980.
The policy was an evolving collection of central targets and provincial regulations, not one uniform law enacted on one day.
The one-child rule never applied identically to every couple; exceptions and enforcement varied substantially by locality, hukou status, ethnicity and family circumstances.