The invention relates to a clustered sirofil-spun SOLOTEX composite yarn. An English count of the yarn is 20S-60S; the yarn comprises the following ingredients by percentage of weight of a fiber at a conventional moisture regain: 30-40% of tencel, 30-40% of cross-shaped section moisture absorption and sweat releasing polyester, 5-10% of spun silk yarn and 20-40% of SOLOTEX. A SOLOTEX filament is a 50D/36F FDY (fully drawn yarn) or DTY (draw texturing yarn). A spinning method of the clustered sirofil-spun SOLOTEX composite yarn comprises the following steps: 1) preparing a health preservation solution, uniformly spraying the mixed solution onto the surface of a spun silk raw material for sealing and health preservation for 24-48h, 2) opening and mixing the tencel, the cross-shaped section moisture absorption and sweat releasing polyester and the spun silk yarn according to a procedure, 3) performing heckling, drawing and roving: allowing a cotton roll to pass through a hackling machine, 3 drawing frames and a roving frame to prepare a rough yarn, 4) spinning a spun yarn, and 5) performing winding: winding the composite yarn with an automatic winder into a cone yarn.