The following phenolic acids: protocatechuic, p-hydroxybenzoic, o-hydroxybenzoic, cafFeic, syringic, p-coumaric and ferulic were detected in herb of Passiflora incarnata L. and in "Passiflor" by 2D TLC method. Derivatisation was performed with known reagents and two new ones containing solution of copper (II) and cobalt (II). The amount of seven phenolic acids were detected by RP HPLC method. The "Passiflor" specimen contains the same set and similar content of phenolic acids as herb of Passiflora incarnata L.