Bonding of (expectant) parents with their child is of great importance for the psychological well-being of both the parents and the child. This is especially true if parents suffer from mental health problems like depression. Furthermore, attachment experiences during early childhood can affect both the child's mental health as well as later relationships. However, typical assessment methods like the Strange Situation Test are not very suitable in clinical practice in neonatology and obstetrics, especially since the focus here is primarily on the child's attachment behavior. In addition, bonding with the unborn child cannot be assessed in this way. Therefore, questionnaires represent a more feasible method for the assessment of parental bonding. Instruments have been developed for the time during pregnancy and after birth, but most of them were developed for women. Also, there is a need for further methodological development of these questionnaires. Cut-offs and norm values are highly relevant for clinical practice, but still need to be established in some cases. Assessment of parental bonding using questionnaires can potentially be beneficial and will most likely help to initiate timely supportive interventions.