Mental retardation is a worldwide problem and in India it is a shocking and alarming fact that approximately 2.5 to 3% of the total populations are mentally retarded. Mental retardation is not only a biological, educational or psychological problem but it is a multi-dimensional problem of a mixture of psycho-social, biological and educational factor. But the public and professional interest in the etiology of mental retardation and their in the problems faced by retarded children and their families has been at best meager and sporadic. This apathy has persisted despite the high incidence of mental subnormal threats the world, a problem which no society can avoid. This study aims to find out the Parental Attitude of Mentally Retarded children in Kolkata. The study reveals that 27 out of 30 parents have shown their favorable parental attitude which is above 50 % of the total. Rest 3 have shown unfavorable parental attitude, which is below 50 % of the total. But those who are even above 50% do not have 100% positive attitude. As the problem is not a biological, social worker should play a significant role in solving this social problem. Therefore this research study is taken.