To explore the curative effect of the treatment of infantile growth retardation from the point of long and strong collaterals of Du meridians,in order to enrich the treatment methods and basis.Methods:A total of 78 children with growth retardation admitted to Longhua District People's Hospital from March 2016 to January 2019 were selected as the research objects and were divided into 2 groups according to the principle of double-blind randomization,with 39 cases in each group.The control group received perception,memory,comprehensive language training,and the observation group was added with acupuncture at Changqiang point.All patients were treated for 3 months.The changes of Gesell development scale,Peabody sports development scale,Wechsler children's intelligence scale,symptom score and trace elements were observed and compared before and after treatment,and the curative effect was evaluated after treatment.Results:1) after the treatment,the scores of adaptability,big movement,fine movement,language and social intercourse in Gesell development scale increased significantly in the 2 groups,while the scores of reflection,fixation,movement,object control,grasping,visual motor integration in Peabody development scale increased significantly in the 2 groups (P<0.05).2) after the treatment,the verbal IQ,operational IQ and total IQ of Wechsler children's intelligence scale in the 2 groups were significantly increased compared with those before the treatment,and the difference was statistically significant(P<0.05),and the observation group was significantly better than the control group (P<0.05).3) after the treatment,the effective rate of the observation group was 43.59%,the total effective rate was 87.18%,the effective rate of the control group was 25.64%,the total effective rate was 66.67%,and the observation group was significantly better than the control group (P<0.05).4) there was no significant difference in the content of calcium,zinc and iron between the 2 groups before and after the treatment (P>0.05).After the treatment,the content of calcium,zinc and iron in the 2 groups increased significantly (P<0.05),and after the treatment,the above indexes in the observation group increased more significantly than those in the control group (P<0.05).Conclusion:Acupuncture at Changqiang point combined with rehabilitation training can promote the development of language function,improve the development level of various energy areas,and promote the secretion of micro hormones,which is of great positive significance.