Introduction: Intestinal parasitosis are neglected diseases that are still a major public health problem in tropical countries. Objective: This study was undertaken to evaluate the impact of seasons in a subtropical climate on the occurrence of intestinal parasites in children under 5 years of age. Patients and method: The study concerned 504 cases of children under 5 who consulted at the "Afia-Sake" Reference Health Center and carried out direct parasitological examination of stools. Each patient underwent a fresh optical microscopic stool examination by the direct physiological saline technique and positive results were reported for the different subtropical climatic seasons corresponding to the date of each child's passage to the Health Center. Result: The prevalence of intestinal parasitosis is 94%, the most affected age group is between 18-29 months with a predominance of female. We did not find a statistically significant difference between the presence of parasites and the seasons; for, the risk of having mono-parasitoses during the long rainy season and the risk of having poly-parasitoses during the short dry season appeared equal. conclusion: Periodic chemoprophylaxis with deworming, drinking water supply without health risks, hygiene and sanitation and veterinary public health measures should help to curb these endemics.