---
title: "Deng Xiaoping Theory Definition | Model Diplomat"
description: "Deng Xiaoping Theory is the official doctrine advocating market reform under one-party rule, crucial for understanding China's political landscape."
url: "https://modeldiplomat.com/learn/glossary/deng-xiaoping-theory"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- Deng Xiaoping Theory is the official body of reform-era doctrine, enshrined in the CCP and PRC constitutions in 1997, advocating market reform under one-party socialist rule.
- When was Deng Xiaoping Theory formally enshrined as official ideology?
- What are the Four Cardinal Principles?
- What is the 'primary stage of socialism' thesis?
- How does Deng Xiaoping Theory relate to later CCP ideologies?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

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In December 1978, Deng Xiaoping steered the Third Plenum of the 11th CCP Central Committee toward Reform and Opening-up, launching the doctrine constitutionally enshrined as Deng Xiaoping Theory at the 15th Party Congress in 1997.

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