The stressful relationship between children and parents is the pain with which both go through when they find themselves unable to cope as a parent or a child. In order to find out the impact COVID-19 pandemic and suggest some solutions to reduce stress between parents and children, we conducted a survey on the impact of the COVID-19 pandemic on stressful relationships between parents and children at high school age in Da Nang city. In a survey of randomly-selected high school students, the findings reveal a high rate of tension between them and their parents, particularly up to 38.5% (212/550). In reality, there are many factors affecting the stressful relationship between children and their parents at this age, in which psychological fear about health; social distancing policy; closed schools; students staying at home 24 hours a day and learning online; the disruption in children's daily routine; excessive use of electronic devices, are major causes of stress in the relationship between children and their parents. From this practice, our research team have proposed such solutions as creating outdoor activities and consulting the handbook; designing extra-curricular activities and more importantly, organizing training courses on life values for parents to increase happiness and reduce stress in parent-child relationship.