The invention discloses a method for preserving and displaying large benthic animal specimens, and relates to the technical field of specimens. The method comprises 1, preparing related materials formaking specimens, 2, by a threading needle, penetrating through the side face of the chest of a large benthic 
animal body, then binding to the center of a 
glass slide, placing the specimen under an anatomical lens for 
posture correction, then slowly and obliquely placing the specimen after 
posture correction into a specimen 
bottle containing a stationary liquid by using 
tweezers, covering a bottlecap, 
cutting a sealing film with a 
proper length, sequentially stretching and winding for two circles along a 
bottle opening of the specimen, and sealing from the center of the 
bottle cap of the specimen, and 3, reserving 1-3cm blank parts above the sample labels containing species names, distribution, makers and other information, fixing the labels at the bottom ends of the sample bottles by using double faced 
adhesive tapes, and then respectively placing the specimens according to different class groups. The operation is simpler and more convenient, the long-term sealing performance is better, the aquatic 
organism diversity protection propaganda and education can be conveniently carried out, and the practicability is very high.