A process for manufacturing a silica gel extruded soft lamp strip, comprises the following steps: a. pasting LED beads and other components on an FPC soft board, and performing reflow soldering; b. soldering the FPC soft board into a lengthened FPC soft board in a lead-free manual soldering manner; c. performing aging impact on the lengthened FPC soft board; d. performing pre-extrusion processing on the FPC soft board which is qualified after aging impact; e: extruding the FPC board using a solid silica gel mixture in combination with an extrusion mold, and then curing using a baking oven; and f. clipping from a connection plate position of a semi-finished product from the step e, and installing a plug so as to complete processing. The process can effectively ensure water-proof and moisture-proof properties, luminance uniformity and color temperature consistency of the LED soft lamp strip, and has a high practical value.