After reviewing the existing bibliography in the last 20 years, we concluded that there is a lack of information regarding the ethical conflicts that affect to pediatrics in their daily practice. It produces certain degree of uncertainty in these professionals at the time of solving these problems. We made a systematic search in the main data bases, finding more than 150 articles related, of which 80 were considered outstanding. After studying them, we have found 40 ethical dilemmas, related to some principle of solution and that we described in this article. Through them we can find such important dilemmas as those related to physical disability, palliative care or consent from children.