1, the party is in its infancy, and its theoretical preparation and practical experience are insufficient.

2. Dogmatizing Marxism.

3. The Party doesn't know much about China's history and social conditions, and doesn't know much about the characteristics and laws of China's revolution.

4. The resolutions of sanctifying the Communist International and the experience of the Soviet Union.

China Revolution won twice and failed twice;

From the failure of the Northern Expedition to the rise of the Agrarian Revolutionary War, and from the failure of the fifth anti-"encirclement and suppression" war to the rise of War of Resistance against Japanese Aggression, there were two historic turning points. Two of the victories were the victory of the Revolution of 1911 and the victory of the Liberation War, and the failure was the failure of the Great Revolution and the failure of the Northern Expedition. During the birth of Mao Zedong Thought, from 192 1 to 1927, the Great Revolution failed, that is, the establishment of China and the national revolution.

The germination of Mao Zedong Thought is the starting point of combining the basic principles of Marxism with the revolutionary practice in China, and the beginning of the application and development of Marxism in China. Before and after the founding of the People's Republic of China, the widespread spread of Marxism prepared a scientific world outlook and methodological basis for the germination of Mao Zedong Thought.

During this period, he didn't have a complete and unified understanding of China's historical and social conditions, the characteristics of China revolution, the laws of China revolution, the basic theory of Marxism and the practice of China revolution, so he failed to form a complete scientific theory suitable for China revolution.