Purpose of the study: The present study mainly argues the limitations of normative ethics and analyzes the anthropocentrism in Kim Stanley Robinson’s 2312 based on the actions or duties of the characters. Methodology: The article used normative ethics as a methodology. Normative ethics is the study of ethical actions that has certain rules and regulations about how we ought to do and decide. So, this study has chosen a normative ethic that consists of three ethical theories Utilitarian approach, Kantian ethics and Virtue ethics to judge duties that are right and wrong. Main Findings: As a result, normative ethics compact with a one-dimensional approach. All three ethics deal with its own specific code of ethics. Utilitarianism has focused on good outcomes. Kantian ethics has paid attention to good rules with duty. Virtue ethics focused on the good people but all three theories have a strong common objective of focusing on only human beings (sentient entities) and omit other entities (plants and animals). So all normative ethics have certain limitations and do their duties without thinking about consequences and situations. In conclusion, this code of normative ethics has provoked as anthropocentric. In addition that Swan’s actions and the rational behavior made her miserably failed in Mercury through the construction of the biome and creation of quantum computers. So this cause, in the end, the space people want to move from space to earth to rebuild the biome. Applications of this study: The prudent study analyses the normative ethics in a detailed manner under the Utilitarian approach, Kantian ethics and Virtue ethics. These philosophical domains can be benefitted for researchers to practice and implement during the research process in Humanities and Social Sciences especially. Novelty/Originality of this study: The study analyzed the anthropocentric attitude of the character Swan in 2312 based on her actions or duties through the code of normative ethics (Utilitarianism, Kantian ethics and Virtue ethics).