The design of high spectral testing software for camellia oleosa seed based on visual basic 6.0 was finished in this paper. First, the file of high spectral was read by the software, and the effective data was chosen, then, the high spectral data was processed and the sensitive bands were extracted. With the combination of sensitive bands and high spectral data, the model of high spectral can be built to test the composition content like oleic acid, linoleic acid and palmitic acid in fatty acid of camellia oleosa, then the result was analyzed and stored, so...