The invention belongs to the technical field of 
experimental animal models, and provides a method for constructing a 
rat model with pine cone injury, which aims to solve the problems of complex operation, low success rate, long modeling time, low 
repeatability and the like of the conventional 
rat model with pine cone injury. The method comprises the following steps of: performing 
intraperitoneal injection of PCPA of 450 mg / kg on a rat for 2 days continuously, once every day; or performing electrical stimulation on the rat by using a 
shuttle box, wherein the electrical stimulation 
voltage is 30V, the current is 0.8A, the stimulation time is 30 seconds, the interval is 30 seconds, the cycle is performed for 60 times, and the operation is performed for 5 days continuously; or performing an 
intraperitoneal injection PCPA method on the rat on the fourth day by using an electrical stimulation method. Three modeling methods, namely 
pathological histomorphology, serum detection of the contentof 
melatonin which is a main synthetic secretory 
hormone of a pine cone, and animal general situation and behavioral auxiliary method 
objective evaluation, 
cause injury of the pine cone of the rat, and provide a good model basis for researching and screening medicaments and mechanisms with protective and therapeutic effects on the pine cone injury; and the method is simple and convenient, the modeling time is short, the 
repeatability is high, and the index evaluation is simple and reliable.