The present invention belongs to a field for producing optical sensor chips, particularly relates to a drug morphia molecule recognition sensitivity chip and a producing method thereof. The drug morphia molecule recognition sensitivity chip of the invention is composed of two parts of a morphia molecular engram polymer film and a metallic film basal layer from the upper to the lower; wherein the metallic film base is that an optical microscopic glass is coated with a layer of metallic film through a vacuum vapor deposition method or a sputtering technique, and the morphia molecular engram polymer film is cross linked on the metallic film surface of the metallic film base through a chemical synthesis method. A stereo positive hole having multiple action sites and matching with the morphia molecule on the space and combining sites is formed in the polymer film structure, thereby it is capable of implementing a specificity and high-sensitivity recognition function of the drug morphia molecule. The molecule recognition sensitivity chip of the invention has a stable physical chemistry property, can be used for many times, is easy to be saved, has a simple production method, consumes fewenergy; and has a low production cost.