The invention discloses a fireworks safety firing cable and a manufacturing method thereof. The fireworks safety firing cable comprises an ignition-composition core and cotton yarn attached with firing cable compositions; and the manufacturing method is mainly characterized by comprising the following steps: adding an appropriate amount of organic solvents into the prior firing cable compositions, and evenly stirring to enable the compositions to be in a thick fluid flurry state; and evenly attaching the fluid slurry onto priming cotton yarn as a firing cable composition core by improving the structure of a priming machine. The invention has the advantages that a plurality of process flows with higher hazards are reduced in the processing process of firing cable compositions, the defect that composition powder is interspersed in production places is avoided in the cotton yarn wrapping process, and the production security is improved qualitatively; the quality of the product is improved, and the phenomena of composition interruption, shortage and leakage are prevented from generating; no dust pollution is generated in production and application, and production personnel are avoided from being injured by occupational diseases, such as silicosis, and the like.