The characters combine logically: 素食 (sùshí) means “vegetarian food.” Adding 主义 (zhǔyì) turns it into the ideology of “vegetarianism.” Finally, adding 者 (zhě) specifies a “person” who follows that ideology.
Historically, vegetarianism in China is deeply intertwined with religion, particularly Buddhism (佛教) and Taoism (道教). This traditional practice, known as 吃素 (chīsù) or 吃斋 (chīzhāi), is not typically seen as an “-ism” but as an act of spiritual purification, compassion for living beings, or a way to accumulate merit. Many observant Buddhists practice vegetarianism on specific days of the lunar calendar, such as the 1st and 15th days (初一、十五). This form of vegetarianism also often excludes pungent spices like garlic, onions, and leeks (五辛, wǔ xīn), which are believed to excite the senses. This contrasts with the modern, Western concept of a “vegetarian” or “vegan,” which is what 素食主义者 more closely represents. The rise of this term in China reflects a global trend where individuals, especially in urban areas, adopt plant-based diets for secular reasons:
So, while an elderly grandmother practicing 吃素 (chīsù) for religious reasons and a young Shanghai professional identifying as a 素食主义者 for environmental reasons both avoid meat, their cultural framing and motivations can be quite different.
The most crucial thing for a learner to understand is the difference in formality and context between `素食主义者` and `吃素`.
The term `素食主义者` is often used as a self-identifier among younger, urban Chinese who feel part of a modern, global movement. On social media apps like Weibo or Xiaohongshu, you'll see people proudly use it in their bio.