The interactions of carbofuran and DNA were studied using voltammetry and fluorescence spectroscopy.The formation of carbofuran-DNA makes the current peak of DNA decreased by voltammetry method.The binding number(n)and constant(Ka)for complex carbofuran-DNA were calculated to be 1.06 ±0.04 and 0.11 ±0.03 mol-1 L,respectively by fluorescence measurement.Chemometrics approach,such as singular value decomposition(SVD)was used to evaluate the number of spectral species in the drug-DNA binding process.And the pure spectra and concentration profiles in the kinetic system were clearly deduced by multivariate curve resolution alternating least squares(MCR-ALS)with the initial estimates by evolving factor analysis(EFA).