The invention provides a method for improving SiC fiber-reinforced Ti/Al3Ti intermetallic compound laminar composite interface strength. SiC fiber is subjected to pretreatment technologies of glue removing, roughening, sensitization and activating firstly and then subjected to chemical nickel plating and electric nickel plating; the treated SiC fiber is evenly dispersed and spread on the surface of Al foil, and afterwards, a TC4 foil material and an Al foil material are arranged in a staggered manner, and it is ensured that TC4 foil pieces are arranged on the upper surface and the lower surface; and hot pressing sintering is conducted. In order to solve the problem of wettability between the fiber and a base body, the technological method for firstly conducting chemical nickel plating and secondly conducting electric nickel plating for the SiC fiber is provided, afterwards, the SiC fiber obtained after nickel plating is introduced into the Ti/Al3Ti intermetallic compound base laminar composite, and therefore overall strength, plasticity and toughness of the intermetallic compound base laminar composite are improved.