Crystal structure of coumarin 6 has been solved by X-ray diffraction. The crystals are triclinic, space group P-1, with a=8.823(2) ${AA}$, b=8.898(2) ${AA}$, c=11.025(9) ${AA}$, ${alpha}$=86.41(3)$^{circ}$, ${eta}$=85.39(3)$^{circ}$, ${gamma}$=76.23(3)$^{circ}$, Mr=350.42, V=837.1(3) ${AA}^3$, Z=2 and R=0.0516. The molecules are packed parallel to each other by weaker ${pi}{cdots}{pi}$ and C-H${cdots}{pi}$ interactions. The detailed geometry of C-H${cdots}{pi}$ interactions were discussed. The hydrogen bonds and non-traditional C-H${cdots}O$ interactions join the no-parallel molecules together. All the molecules packed wall-like with the molecular brick.