The invention discloses a 
nilotinib-loaded heart microneedle patch for targeted myocardial administration and 
myocardial fibrosis treatment, and a preparation method of the 
nilotinib-loaded heart microneedle patch. According to the method, GelMA hydrogel with natural 
biocompatibility and biodegradability is used for loading an anti-
fibrosis drug nilotinib; a 
drug-loaded microneedle patch is prepared through 
ultraviolet light cross-linking curing; the microneedle patch naturally forms a 
radian attached to the surface of the heart in the curing process, has good mechanical properties and 
drug release performance, is attached to the surface of an epicardium, not only can release drugs in a targeted myocardial manner and exert the 
drug effect at a safe dosage, but also can provide mechanical support for the heart, prevent cardiac rupture, prevent left ventricular remodeling after 
myocardial infarction, and improve cardiac functions; and the drug-loaded heart microneedle patch has pharmacological and mechanical treatment effects at the same time, has good prospects for treating excessive 
cardiac fibrosis after 
myocardial infarction, preventing ventricular remodeling and improving cardiac functions, and has the advantages of high targeting property and high safety.