Spiritual intelligence is very important in life, to achieve a calm and eternal life. But when viewed now many children have intellectual intelligence and emotional intelligence success with a myriad of achievements but he did not get satisfaction, happiness and peace of mind, because he does not have spiritual intelligence, and many parents who are less aware of the importance of spiritual intelligence of their children, and do not understand how to foster spiritual intelligence. The main problem of this research is how to foster spiritual intelligence of children in the family. The authors aim to raise this essay is to reveal ways or steps that can be done by parents in fostering spiritual intelligence, things that influence spiritual intelligence fostering and how the role of parents in fostering spiritual intelligence of children in the family. While the usefulness of this research is as a reference for parents, educators in trying to foster spiritual intelligence in children. Based on the results of research conducted by the author, it can be concluded that the essence of spiritual intelligence is the intelligence of the human soul derived from human nature itself which is closely related to religious and monotheistic aspects that can help a person build his true self into a true human being. The urgency of fostering spiritual intelligence in children, because with spiritual intelligence it makes children able to function intellectually and emotionally effectively and able to think more clearly, more positively to become a better person so that they can become true Muslim individuals. Factors that influence the formation of spiritual intelligence are innate (internal), and environmental (external) factors. The steps that must be considered by parents in fostering spiritual intelligence in children are introducing children to Allah, the Apostle, Islam, themselves, and the Qur'an. The role of parents in fostering spiritual intelligence in children is to educate, nurture, protect, help and develop children's spiritual intelligence to deliver it to the true source of spiritual intelligence (Allah SWT) through Islamic teachings contained in the Koran and the Hadith that has been exemplified by the Prophet.