This experiment was to study the effects of different feed processing technology type and vitamin additive amount on growth performance and slaughter performance of broilers. A total of 480 one-day-old broilers with similar body weight were randomly divided into 4 groups with 8 replicates per group and 20 broilers per replicate. The diet of control group (group A) was processed by ordinary feed processing technology, added the normal dose of compound vitamins[earlier stage (1 to 21 days of age) 350 mg/kg, later stage 250 mg/kg (22 to 42 days of age)]; the diets of experimental groups were processed by high effective conditioning and low temperature pelleting technology, which reduced the addition of vitamin in the diets (group B:earlier stage 280 mg/kg, later stage 200 mg/kg; group C:earlier stage 224 mg/kg, later stage 160 mg/kg; group D:earlier stage 180 mg/kg, later stage 128 mg/kg). The experiment lasted for 42 days. The results showed that the starch gelatinization of feed of group A in earlier stage was significantly lower than that of groups B, C and D (P<0.05). In the later stage, the pellet durability index of group A was significantly lower than that of groups B, C and D (P<0.05). There was no significant differences on the final body weight, average daily gain, average daily feed intake and ratio of feed to gain of broilers in earlier stage, later stage and whole stage (1 to 42 days of age) among all groups (P>0.05). There were no significant differences on the leg weight/slaughter weight, breast meat weight/slaughter weigh, heart weight/slaughter weight, liver weight/slaughter weight, spleen weight/slaughter weight, muscular stomach weight/slaughter weight and glandular stomach weight/slaughter weight among all groups (P>0.05), there were no significant differences on the length and weight of duodenum, jejunum and ileum among all groups (P>0.05). In conclusion, the diets of broilers are processed by high efficiency conditioning and low temperature pelleting technology, the quality of pellet feed is better than ordinary feed processing technology, and reduce the vitamin additive amount have no significant different on growth performance and slaughter performance of broilers compared with ordinary feed processing technology, the high effective conditioning and low temperature pelleting technology can save the use of vitamin.