The paper covers a current state of molecular studies of liverworts including new data from authors. The traditional conceptions of liverwort phylogeny and systematics were changed greatly in a result of recent molecular researches. The phylogenetic inferences from studies of different DNA loci and species sampling are mainly congruent. The phylogeny and systematics of one of the largest and taxonomically difficult suborder Jungermaniineae was discussed based on analyses of internal transcribed spacer ITS1-2 of nuclear rDNA and chloroplast trnL-F of large species number.