Subgrouping of Nisoic (Yi) Languages reflected Dr. Ziwo LAMA (aka. QIU Fuyuan)’s insight on language subgrouping of Nisoic (or Yi Branch, Loloish or Ngwi) and Niso-Burmese, a language stock spoken in Southwest China, Vietnam, Thailand, Laos, Myanmar as well as India. This book studies the affiliation of 34 Nisoic and three Burmic languages from two perspectives: shared innovation and phylogenetic estimation. Shared phonological innovations and shared elements of word formation were used to establish the language relationship of Nisoic. This comparative study yielded eight subgroups: Nisoish, Lisoish, Kazhuoish, Nusoish, Naxish, Lahoish, Hanoish, and Mondzish. These eight groups and Burmish group made up the nine members of Niso-Burmic Branch. Both Bayesian inference and Neighbor-Net were used to estimate the evolution of Niso-Burmic descent. The phylogenetic database matrix was comprised of 38 taxa and 4099 character states. The results of the phylograms produced by MrBayes and networks generated by SplitsTree were almost identical, and they were essentially the same as the subgroups of Nisoic and Niso-Burmic determined by shared innovations.