Abstract: The present invention provides a fungicidal composition and a fungicide for controlling asparagus stem blight, and belongs to the technical field of controlling asparagus stem blight. The composition includes difenoconazole and propamidine; and the weight ratio of the difenoconazole to the propamidine is 20:1-1:20. The fungicide of the present invention includes difenoconazole, propamidine and an auxiliary material; and the difenoconazole and propamidine account for 3%-90% by mass of the total amount of the fungicide. The present invention uses difenoconazole and propamidine as active ingredients, where a combined use of them has a synergistic effect on the pathogenic fungi of asparagus stem blight, and especially has an obvious synergistic effect on the asparagus stem blight in a ratio range of 20:1-1:20.