Yichun's economy is diversified across manufacturing, agriculture, tourism, and pharmaceutical industries. The city is one of Jiangxi's major industrial centers, with a strong focus on lithium battery production — Yichun is known as "China's Lithium Capital" due to its abundant lithium deposits.
Agriculture remains important, with the region producing rice, tea, and traditional Chinese medicinal herbs. The fertile plains around Yichun are among Jiangxi's most productive agricultural areas.
Tourism is a growing sector, with Mingyue Mountain and Wen Tang Town attracting millions of visitors annually. The hot spring industry supports numerous resorts, hotels, and related services. The Chan Culture Expo Park and Baizhang Temple draw cultural and spiritual tourists.
The pharmaceutical industry is significant, with several traditional Chinese medicine companies based in the city. Zhangshu City, administered by Yichun, is a historic center of herbal medicine trading with a famous medicinal herb market.