Parenthood is a unique experience characterized by numerous challenges. It is the most important role in life, involving, among other things, a range of parenting skills for the care and upbringing of a child. Early bonding with the child begins during pregnancy, so parents are already preparing for this demanding role. For both parents, parenthood is a very challenging time, characterized by different adjustment phases and parenting styles. Parents who start preparing earlier adapt more easily and quickly to parenthood and suffer less stress, anxiety, and restlessness. Adaptation to parenthood is a dynamic process that plays an important role in the development of parents' sense of competence. The adjustment process is not constant and depends not only on parenting itself, but also on numerous factors that can influence its change. Parents play an important role in the care of the child, and the way in which parents adapt to this role can affect the child's growth and development, behavior, and personality development. Each parent adapts to the parenting role in a unique way. At the same time, the parenting style as a way of interacting between parents and children can be authoritative, authoritarian, permissive, and indifferent. The process of adaptation and the way in which the challenges of parenting are dealt with are closely linked to the development of the parenting style. The parenting style does not have to be the same for both parents and has an important influence on the child's upbringing and behavior. This thesis describes the factors that influence adaptation to parenthood and the resulting development of parenting style. Particular attention is paid to the role of the nurse in parents' adjustment to parenting.