Objective  To review the diagnosis and treatment of pyloric canal polyp in infants and toddlers suffering progressive gastric outlet obstruction.   Methods  Clinical data of 5 male infants and toddlers

at age of 10 to 26 months (mean 15.6 months) with pyloric canal polyp admitted in our department from January 1993 to February 2009 were analyzed.   Results  Of 5 cases

the starting was acute and severe. the conservative treatment was out of effect and no any assistant examination was helpful during diagnosis

and every case was diagnosed clearly through exploratory laparotomy

cured with polypectomy and classic pyloroplasty.   Conclusion  Currently

the exploratory laparotomy is an important way to diagnose pyloric canal polyp in infants and toddlers

while other assistant examination seems useless in this aspect. Polypectomy and classic pyloroplasty should be carried out during exploration

and it is dangerous for their life without correct therapy in time.