Background: Stunting is the impaired growth and development that children experience from poor nutrition, repeated infection, and inadequate psychosocial stimulation. Children are stunted if height for age is more than two Standard Deviations (SD) below the WHO child growth standards median. Aim of the study: This study aims to assess mothers' perception regarding health lifestyle among their primary school children with stunting. Research design: Descriptive research design was used to conduct this study. Setting: This study was conducted at Nasar Health Insurance Clinics in Shubra Alkhaymah at Qaluabiya Governorate. Sample: A purposive sample of 338 mothers had primary school children with stunting aged from 6 to12 years old. Tools: Three tools were used to conduct this study. Tool I: Consisted of three parts. Part I: Socio demographic characteristics of mother and personal characteristics of primary school children with stunting. Part II: health problems of primary school children with stunting. Part III: Mothers' knowledge regarding stunting, Tool II: likert scale attitude of mothers. Tool III: Lifestyle patterns scale. Results: 37.9% had poor knowledge regarding stunting disease, 84% of primary school children with stunting have cardiovascular problem of anemia, and 86,1%, 82% of them have psychological problems, 57.4% of studied mothers had negative attitude about stunting, 59.2% of studied mothers had unhealthy lifestyle reported practices regarding their stunted primary school children. Conclusion: The present study revealed that majority of studied children have cardiovascular problem of anemia, psychological problems of feel upset and sad. Also, more than one third of the studied mothers had poor knowledge about stunting. More than half of mothers had negative attitude about stunting. While there were highly statistically significant relation between studied mothers total knowledge and their socio demographic characteristic And there were highly statistically significant relation between studied mothers total attitude level and their total knowledge. Recommendation: Develop and implement health educational program to improve mothers' knowledge and practices regarding their primary school children with stunting.