It is necessary to know the influence of the current pandemic situation on children's emotional intelligence (EI). Therefore, this study aimed to analyze the difference in 34 Spanish children's EI (aged 9-10) caused by the lockdown. EI was measured with the BarOn Emotional Intelligence Inventory (EQ-i:YV). Results have revealed a reduction in EI, specifically on intrapersonal, interpersonal, and adaptability scales (all p < 0.01). Thus, the study highlights the negative influence of lockdown situation on children's EI and considering the impact this may have at a cognitive, social, or academic level, it would be convenient to promote its development at school.