Fresh plants of T. chinensis collected from Inner Mongolia were used to isolated the endophytic fungi from their roots, stems and leaves after superficial disinfection. According to the morphological characteristics observation and microscopy examination, 6 endophytic fungi strains were isolated from the T. chinensis, including four strains from the leaves, one from the stems, and one from the roots. All the separated fungi strains were identified as penicillium genus (Pinicielium).