Abstract: Abstract：To research the cucumber and lettuce’s combination to promote the role of fracture healing and the initial mechanism, 60 white broiler, weighing 1.75- 2.25 kg,were randomly divided into an equal number of high- dose group, middle dose group, low- dose group, positive control group and negative control group, then, to fracture the broiler’s middle of right leg to cause transverse closed fracture model. Different proportions of cucumber and lettuce seed powder extract were gavage feeding to experimental group. Musk bone capsule was gavage feeding to positive control group. Negative control group were fed with saline. Subsequently　each group were adopt dynamic observation, histological observation, serological and radiological observation. Experimental group that were fed middle dose of cucumber and lettuce seed powder extract could promote systemic metabolic response, increase serum alkaline phosphates' levels, speed up the absorption of hematoma, increased serum calcium and phosphorus concentration and improve the quantity and intensity of callus generation. The results showed that cucumber and lettuce can increase calcium and phosphorus concentration, promote calcium and phosphorus transfer to the fracture line to promote fracture healing.

Key words: Key words：Cucumber; Lettuce; fracture; broiler