Introduction: Child malnutrition is a major public health concern worldwide, particularly in low-and middle-income countries. The latest report from Senegal's Continuous Demographic and Health Survey revealed that 18% of children in Senegal were stunted (chronic malnutrition), 8% were wasted (acute malnutrition) and 14% were underweight. Thus, this study aimed to assess the characteristics associated with malnutrition in children according to their nutritional status. Methods: This descriptive transverse study was conducted at the Pediatric Social Institute of Pikine/Guediawaye and the National Hospital Center of Pikine, in Senegal between October and December 2019. A total of 94 children were recruited, with the consent of their legal tutors. Descriptive and multivariate analyses of the factors associated with malnutrition were performed. The z-scores for the indices of nutrition were determined with WHO Anthro® software version 3.2.2. All the data analyses were performed using R software version 4.2.2. Result: From the 94 children recruited, 51.06% were female, with a sex ratio (male/female) of 0.96. Acute malnutrition was recorded in 62.77% of cases, chronic malnutrition in 41.49%, and underweight in 71.27%. Linear regression analysis showed that many factors, such as the female gender [OR = 1.82 CI (1.02 -3.3), P-value = 0.04], consanguinity [OR = 2.84 CI (1.14 -7.65), P-value = 0.03], low birth weight [OR = 4.83 CI (2.15 -12.89), P-value = 0.0004], were associated with acute malnutrition. Low birth weight (<2.5 kg) [OR = 10.66 CI (3.82 -44.39) P-value < 0.0001], non-exclusive breastfeeding [OR = 3 CI (1.40 -7.13)] P-value = 0.007], dietary diversification before six months [OR = 2.04 CI (1.23 -3.51), P-value = 0.007] and others factors were associated with underweight. The most frequently recorded clinical signs are weight loss (30.85%), fever (23.40%), diarrhea (34.04%), and anemia (70.