A straight way type solar collector tube, principally composed by assembly of inner metal tubes and connection of outer glass tubes, the assembly of inner metal tubes is welded or spliced together by hollow metal tubes and bowl component, tube connection component located in two ends of the hollow metal tube; two ends of the metal tubes assembly is provided with metal elastic components that is sticked with the outer glass tube jacketed outside of the hollow metal tube; surface of the metal elastic component is wavilness caused by metal stretching or molding, and its back surface is S-shape, its inner hole is welded or sticked onto the metal tube connection component of the inner metal tube assembly; two ends of the outer glass tube is inserted into external port of the metal elastic component and sticked by adhesive to implement permanent connection with the outer glass tube. The invention is provided with features of high heat utilization, accumulating no rabbish, difficult furring, strong compression ability, generating high-heat hot water or vapour.