Two new cyclic hexapeptides, dianthin A(0) and B(1), were isolated from the whole plants of Dianthus superbus. Their structures were established as cyclo-(Ala-Tyr-Asn-Phe-Gly-Leu) and cyclo-(Ile-Phe1-Phe0-Pro1-Gly-Pro0) by IR, UV 1D NMR and FABMS spectra.