Childhood maltreatment (CM), also known as early life stress or childhood trauma, is a major risk factor for the onset of mental illnesses, including Major Depressive Disorder. The purpose of the research was to determine how common CM was among people who had been diagnosed with a depressive condition and to analyse the cumulative impact of several forms of CM that often occurred together. The study compared 150 patients diagnosed with major depressive disorder to 150 age- and sex-matched healthy controls. The purpose of the SCIDI was to confirm a diagnosis of depression and rule out other possible mental health problems. Depressive symptoms were also evaluated using the Beck Depression Inventory. Prevalence of childhood abuse was measured using the Childhood Trauma Questionnaire (CTQ). The findings showed that more than 80% of those diagnosed with depression also had CM. The strongest link was found between emotional maltreatment and both an earlier start and greater severity of major depressive disorder. More impairment is shown when many CMT kinds are present at once. Ultimately, this study adds to our knowledge of CM and its severe link to depression. There is a strong correlation between childhood maltreatment and adult depression, with more than 88% of depressed people seeking treatment for their condition reporting some kind of abuse.