Wide Sargasso Sea is acclaimed as the masterpiece of the British female writer Jean Rhys. In the novel, Rhys reshapes the mad wife of Rochester, Bertha Mason, who is imprisoned in the attic in Jane Eyre. With her own life experience as a white Creole and her experience living in West Indies as a blueprint, setting the abolition of slavery in West Indies in the nineteenth century as the background of the times, Rhys restores Antoinette a real state of survival under colonialism and patriarchy, with a sense of identity loss and confusion. The use of symbolism is one of the most outstanding styles in description. Owing to the use of symbolism, the historical situation of Jamaica under colonialism and patriarchy has been successfully displayed and the abstract moral themes have been vividly conveyed. This paper seeks to set symbolism as a theoretical basis, classify and analyze the symbols in the novel in accordance with their roles in revealing the themes, illustrating a complete interpretation of the complicated racial conflicts and patriarchy oppression in West Indies.