Abstract:Timely assessment of species threatened status is an important basis for adjusting the endangered level of species and implementing effective protection measures. The endemic plants in the Jinsha River area, including Aristolochia delavayi, Hibiscus aridicola, Stemona mairei and Amorphophallus albus, were investigated and evaluated. According to the “IUCN Red List Categories and Criteria: Version 3.1” and “Guidelines for Using the IUCN Red List Categories and Criteria: Version 15.1”, the threatened category of the four species were re-analyzed and evaluated based on the data obtained through field surveys. The results showed that A. delavayi was assessed as Vulnerable (VU), H. aridicola and A. albus were listed as Endangered (EN), and S. mairei was listed as Near Threatened (NT) under the existing wild population resources. Compared with the current threatened category of the four species, the threatened status of A. delavayi was downgraded from Endangered to Vulnerable, H. aridicola was upgraded from Vulnerable to Endangered, A. albus was upgraded from Near Threatened to Endangered, and S. mairei remained unchanged. This study provides a scientific reference for understanding the current status of wild resources, updating threatened category, and timely adjusting effective protection strategies of the four endemic plants.