The major aim of the study was to find out the relationship between emotional intelligence and performance of teachers at secondary school level. The target population of the study comprised 3168 secondary school teachers. Sample of the study consisted of 950 male and female secondary school teachers working in high schools of rural and urban areas. The sample was taken on proportionate basis according to the population of male and female secondary school teachers in each district. The study was co-relational in nature. The required data was calculated through survey technique. The instrument was named Trait Emotional Intelligence Questionnaire Short Form (TEIQue-SF) which was adopted from K.VPatride to measure the emotional intelligence level of secondary school teachers. The performance of teachers was measured through the results of students in annual examination of class 10 conducted by Board of Intermediate and Secondary Education Lahore (BISE). The collected data was analyzed using mean, standard deviation and Pearson r. It was found that emotional intelligence of teachers was having strong relationship with the performance. Conclusions were drawn and recommendations were made.