The invention provides a solar heat collection pre-processing and gasified tar comprehensive utilization process and device used for biomass compression. The solar heat collection pre-processing and gasified tar comprehensive utilization process is characterized by comprising the steps that a biomass solar gasification device and a biomass solar pre-processing softening and solidification forming device are adopted for biomass pyrolysis and gasification to produce gas and for preheating processing and solidification of tar and biomass to form coal, wherein first, solar heat is collected and transferred to a biomass gasification device, pyrolysis and gasification of biomass occur after a gasification temperature of the biomass is reached, produced gas is purified, condensed and compressed to form combustible gas, and meanwhile, a by-product tar produced during gasification can be added to the biomass solar pre-processing softening and solidification forming device to serve as adhesives for briquette coal production; second, the heat is transferred to the pre-processed biomass in the biomass solidification forming device, the biomass is compressed after lignin in the biomass is softened, the biomass is solidified and forms biomass briquette coal, and coupling of biomass solidification and forming and a gasification process is achieved.