Food poisoning among children represents a major public health problem. Our contribution is based essentially to study the prevalence of food poisoning among students of the city of Mohammedia in Morocco. The study was conducted from the results of an epidemiological survey prospective assessment on a sample of 625 students chosen at random in six institutions of urban origin with 321 of female students 51.4% and 304 male students 48.6%. The prevalence of intoxication is 65.3%, the sex ratio is balanced (Female/Male) 1.10 (p<0.35). On 408 students suffered an intoxication 194 (47, 55%) are male and 214 (52, 45%) are female. According to the seasons 51% have been observed in the summer period, 20% during the fall and 15% during the spring of same for the winter. The distribution of poisoned by function of sex and the establishment has not demonstrated a significant difference (Khi-2 =0.97; p<0.22; 5df). The distribution of respondents according to the category of age shows an association very highly significant between the two variable (Khi-2=313.09; p<0.000 to 5 df). The age category of the most affected is that of the students whose age more than 12 years. The prevalence of food poisoning is considerable; this can be linked to health education, information, communication in the area of food hygiene and the awareness of students and of the social and economic impact.