The invention provides a CSP 
light source and a manufacturing method thereof, which includes a light-emitting 
chip, on which a fluorescent 
colloid layer is arranged, and around the light-emitting 
chip and the fluorescent 
colloid layer are surrounded by an outer 
colloid layer with reflective properties.  The manufacturing method of the CSP 
light source of the present invention comprises: (1) pasting the transparent 
adhesive film on the carrier plate; (2) pasting the fluorescent 
adhesive film on the transparent 
adhesive film; (3) 
coating the liquid transparent 
silica gel film on the fluorescent adhesive film  ; (4) 
Mount the light-emitting 
chip on the liquid transparent 
silicone film and cure it by heating; (5) 
Cut out a channel with a specific width along the edge of the transparent 
silicone layer next to the light-emitting chip; (6) In the 
cut out channel  
Coating with reflective 
coating and curing.  The CSP 
light source of the present invention is equipped with an outsourcing colloidal layer with reflective properties, forming a light-gathering structure, which is beneficial to light-gathering, reduces 
luminous flux loss, improves the overall brightness of the light source, and increases the central 
light intensity; and because the fluorescent glue layer is located in the 
blue light  Right above the light-emitting chip, the 
phosphor powder can be fully excited, which improves the light extraction efficiency of the light source.