13-07-2025
Will China's Demographics Constrain Its Foreign Policy?
Deputies from the People's Liberation Army arrive together at the National Peoples Congress at the ... More Great Hall of the People.
Much has been written about China's sharp demographic shift, but less attention has been paid to how this might affect—or even constrain—its international behavior. Let me highlight a few key themes.
To begin, the nature of the demographic shift is pronounced. I have previously written on China's limited response to the problem as well as the ongoing deterioration that makes the issue cumulative. In other words, the situation is worsening and government efforts to mitigate it have largely fallen short.
The data are stark: in 2024, China's total fertility rate stood at approximately 1.1, roughly half the 2.1 replacement level required for population stability. Similarly, the population declined by around 2 million in 2023. Admittedly, that figure is modest in the context of a population of 1.4 billion, but the longer-term trend is sobering: Shanghai Academy of Social Sciences—not known for pessimism—projects a low-end scenario in which China's population falls to 525 million by 2100.
This is a pronounced downward trend, but what is the significance? What does it matter if China's population drops by more than 50%? In terms of China's economy, much or all of that decline will be offset by automation and workforce upgrades. Ironically, despite this demographic headwind, China's economy is still expected to perform reasonably well in the near term.
So the population decline might not be consequential on its own—and perhaps not economically meaningful in the short run—but could it influence China's foreign policy?
Let's explore four possible implications:
1. Military recruitment
The U.S. Defense Department estimates the People's Liberation Army at over 2 million uniformed personnel. This points to a double crunch: first, China will need to increase recruitment incentives as the youth population shrinks. Second, a more tech-oriented military means it must offer salaries that outpace those in the private sector. PLA requirements will not be met by simply recruiting average high school graduates. Why should a talented young coder join the military when the private sector pays more?
2. Military budget
As personnel costs rise faster than procurement costs, China is likely to face a crowding-out effect—more money for people means less for equipment. This is one reason the PLA is investing heavily in drones and cyberwarfare. If China can disable Taiwan's banking system, internet, and power grid, then a new aircraft carrier becomes less urgent. Cyber capabilities won't replace traditional military assets entirely, but they allow the PLA to balance tech and conventional force projection more effectively.
3. The near abroad
Demographic pressures in China must be considered alongside similar trends in East Asia. South Korea, Japan, and Taiwan are experiencing even steeper population declines. Projecting a strategic disadvantage for China based on shrinking demographics overlooks this regional context.
4. PLA doctrine
Perhaps the most important reason demographic disruption won't produce immediate changes in international behavior is the enduring nature of PLA doctrine. The PLA views its mission as protecting China's sovereignty, and it believes this can only be achieved by maintaining military superiority over its neighbors. This has become something of a state religion—as much a matter of ideology as of strategy. The PLA's appetite for growth appears open-ended. It may take decades of population decline before this changes.
In sum, China's population shrinkage has profound implications. It raises questions about how citizens accept government messaging around prosperity and progress. But in foreign policy, constraints may not be immediate. Still, the nature of China's international behavior and military engagement could evolve in subtle ways under the weight of demographic pressure. Ever so slightly, an increase in costs and a decrease in options could constrain behavior over the long run.
