Disaster poses a huge threat to physical health as much as mental health, and Covid-19 is not any different. Understanding that physical and social factors can all contribute to mental health disruptions explains the rising concern of the global community about the impacts of Covid-19 on mental health, especially among the vulnerable, including children and adolescents. It is imperative to explore the diverse impacts of Covid-19 on the paediatric age group, especially to better address its effect and adequately strategize for its resulting conditions. This narrative review, therefore, explores literature reports on the effect of the pandemic on the mental health of children and adolescents. As observed in the literature, Covid-19 did not only threaten the physical health of children and adolescents but also their mental health, especially in terms of anxiety, depression, sleep alteration, etc. In this paper, we have discussed interventions, such as adequate sleep, healthy lifestyles, and nutritious foods, to improve paediatric mental health even after the pandemic.