Abstract: A light-transmissive gutter was designed which aimed at solving multi-span greenhouse gutter with deformation, low light transmittance, poor thermal insulation and other defects. Its main structure used epoxy resin as basic material, supplemented by auxiliary and transparent fibers and other materials compound molded by multichannel composite process. Experiments were carried out to verify it’s properties, the test results showed that: the light-transmissive gutter could reduce the shade area which formed by gutter more than 60% and increase the light transmittance more than 70%, also improve the thermal insulation performance more than 40%. The light-transmissive could greatly increase the use of greenhouse light transmittance and heat insulation performance, reduce the visor area which by the gutter formed, and it could save greenhouse construction costs.