A novel chuvirus from the southern green stink bug (Nezara viridula) was identified by RNA sequencing in this study, which was named "Nbu southern green stink bug chuvirus-1" (NbuSGSBV-1). The complete genome sequence of NbuSGSBV-1 consisted of 11,375 nucleotides, which was confirmed to be a circular form by ‘around-the-genome’ reverse transcription polymerase chain reaction (RT-PCR) and sanger sequencing. Furthermore, three open reading frames (ORFs) were predicted in the NbuSGSBV-1 genome, including a large polymerase protein (L protein), a glycoprotein (G protein) and a nucleocapsid protein (N protein). Thereafter, a phylogenetic tree was constructed based on the RNA-dependent RNA polymerase amino acid sequences of all the currently available viruses in the family Chuviridae. As a result, NbuSGSBV-1 was clustered together with Sanya chuvirus 2 and Hubei odonate virus 11, indicating that NbuSGSBV-1 might belong to the genus Odonatavirus. Meanwhile, motif prediction results revealed five conserved sites among the L proteins of NbuSGSBV-1 and its homologous chiviruses. Moreover, the high abundance and typical characteristics of the NbuSGSBV-1-derived small interfering RNAs suggested the active replication of NbuSGSBV-1 in the host insect. To the best of our knowledge, this is the first report of a chuvirus identified from the insect family Pentatomidae. The discovery and characterization of NbuSGSBV-1 will help to understand the diversity of chuviruses in insects.