The invention discloses a method for breeding a ganoderma lucidum strain by low-energy N<+> implantation induced mutation and a bred strain thereof. The preservation number of the ganoderma lucidum strain is CGMCC No.4191. The induced mutation breeding method disclosed by the invention comprises the following steps: collecting original ganoderma lucidum spore powder to prepare a suspension, spreading the suspension in a culture dish, air-drying, and carrying out N<+> ion implantation induced mutation on the material by a certain dosage of suspension; preparing the spore which is subjected to induced mutation into a suspension, and spreading the suspension on a culture medium for culturing; and after the ganoderma lucidum spores germinate to form a colony, carrying out screening culture and ganoderma lucidum cultivation experiment to obtain a new ganoderma lucidum strain. The sporophore yield of the strain disclosed by the invention is 15.9% higher than that of the original strain; and the contents of polysaccharide and triterpene of the sporophore are respectively 6.41% and 19.99% higher than those of the original strain.