Phylogenetic relationships within Rehmannia have not been well solved. Here, we assembled and reported two new complete plastomes of R. glutinosa and R. chingii by de novo assembly. The complete plastomes of R. glutinosa and R. chingii were 153,797 and 153,328 bp in length, respectively. These two plastomes had 98.8% sequence identity and a total of 401 SNPs, 137 indels and 6 inversions. They were highly conserved in GC content (43.1%), gene order, and gene content (133 genes), including 88 protein-coding genes, 37 tRNA genes, and 8 rRNA genes. The phylogenomic analysis confirmed the monophyly of Rehmannieae and supported R. chingii as the basal taxon of Rehmannia.