Objectives The quality of feed products was supervised and tested to improve quality of feed products and ensure the efficiency of farming husbandry and the safety of livestock products. Methods Continuous supervision and testing of feed product samples in the service areas including Baoshan City and Dehong Prefecture in Yunnan Province was conducted based on the annual "Yunnan Provincial Feed Product Quality Safety Monitoring Plan" from 2006 to 2023. The Kjeldahl method was used to detect the crude protein in feed products according to the GB/T 6432—2018 standard method for the determination of crude protein in feeds. Results A total of 802 batches of feed products from Baoshan City and Dehong Prefecture, Yunnan Province were tested from 2016 to 2023, with an overall qualification rate of 94.5%, a crude protein qualification rate of 96.4%, and a crude protein failure rate of 65.9%. The quality of concentrated feed was more stable than that of compound feed, and the quality of pig and fish feed is more stable than that of poultry feed. There was no significant difference in the qualification rate of feed products between the two areas, and it remained stable at around 95%. Conclusions The quality of feed products in both areas has been steadily improved and maintained at a high level by continuously carrying out the supervision and testing of feed products.