Objective :To evaluate the stable animal model of hyperlipidemia established using improved high -fat feed. Methods: Eighty Spragne - Dawley ( SD ) rats were randomly and equally divided into control group, common high - fat feed group ( common group) ,fat emulsion group, and improved high -fat feed group( improved group), with a male -to- female ratio of 1:1 in each group. The control group, common group, improved group, and fat emulsion group received common feed, common high - fat feed, improved high-fat feed, and fat emulsion, resp...