The invention relates to an immune nano gold test strip for quickly detecting four nitrofuran medicaments. The immune nano gold test strip is prepared by the following steps of: synthesizing general hapten, immunogen and captured antigen aiming at the four nitrofuran medicaments comprising nitrofurazone, furaltadone, nitrofurantoin and furazolidone by using 5-nitrofurfural as a raw material, immunizing a domestic rabbit serving as an experimental animal to acquire polyclonal IgG antibody, preparing gold labeled antibody by using nano gold and the polyclonal IgG antibody, coating the gold labeled antibody solution on a Glass33 glass cellulose membrane, namely a combined release pad, coating the captured antigen and goat anti-rabbit antibody on a detection line and a quality control line of an AE99 nitrocellulose membrane respectively, sequentially sticking the AE99 nitrocellulose membrane, the combined release pad, namely the Glass33 glass cellulose membrane, an absorption pad Cotton linters 2668 and a sample pad Glass33 on a polyvinyl chloride (PVC) back board, and finally, cutting the back board into 4*50mm test strips. The test strip can simultaneously and quickly detect the four medicaments comprising nitrofurazone, furaltadone, nitrofurantoin and furazolidone in feed; and the cost of the test strip is less than 5 yuan, so the test strip is suitable to be widely applied in feed detection or food animal detection.