This questionnaire mainly focus on the specific usage of LED commercial lighting products for domestic lighting designers, including the effect designers have on commercial lighting channels, the analysis of designers’ habits on choosing LED Sports Light and LED Lights products, and the feelings and suggestions designers have for related commercial lighting products.1. Analysis and description of data collectionThe object being studies in this questionnaire is mainly designers, including lighting designer, architecture designer, interior designer and architecture companies. According to the results, 50% of the designers who participated in the questionnaire are from lighting design companies, 19% of them are from architecture design companies, 8% of them are from interior design companies, 12% from construction companies and 11% from other industries. From which we can tell that designers using LED commercial lighting products are mainly from lighting design companies, and the others are mainly from architecture designing companies and construction companies.