A four-factor face-centered central composite design was adopted for studying the effects of coconut oil (3-7%), soybean oil (3-7%), salt (1.5-3.5%) and phosphates (0.1-0.3%) on qualities of low fat emulsified meatballs. Results indicated that the diameter, color, texture indices except cohesiveness, and the organoleptic test indices except taste of meatballs were not significantly affected by these four ingredients. Cooking yield of meatballs increased with increasing in the amounts of coconut oil, salt and phosphates. Meatballs made with the additions of 2.0-2.5% salt, 5-7% coconut oil, 5-7% soybean oil, and 0.3% phosphates had better overall qualities.