The invention discloses a method for synthesizing vinyl norbornene through a multi-lateral-lines feed type tubular reactor. Dicyclopentadiene of high-concentration cyclopentadiene and 1,3-butadiene are used as raw materials and a tubular reactor is adopted to synthesize vinyl norbornene. The tubular reactor adopts a process route of simultaneous multi-lateral-lines feeding of 1,3-butadiene and dicyclopentadiene of high-concentration cyclopentadiene. Dicyclopentadiene of high-concentration cyclopentadiene and 1,3-butadiene are poured into a reaction channel of a reaction section through a feed inlet and any one or more lateral-lines. According to the reaction conditions, temperature is 120-220 DEG C; pressure is 2-15 MPa; retention time is 24-120 min; and the molar ratio of 1,3-butadiene to dicyclopentadiene of high-concentration cyclopentadiene is (0.1-2):1. The method is continuously operated under conditions of high temperature and high pressure. The method has strong controllability, high safety and high yield of vinyl norbornene.