族源地认同、语言认同以及民俗与生计认同是海南疍家的身份界定标记。按其层次可分为三个标记系统:第一层次为族源地认同;第二层次为族源地认同+语言认同;第三层次为族源地认同+语言认同+民俗与生计认同。从时间的维度看,海南疍家身份认同的标记系统呈现为历史沉淀与时代建构的结合;从空间的维度看,呈现为身份提纯与分化的结合。 Identification of ethnic origin, language recognition, as well as the identification of folk custom and livelihood is the Hainan nationality identity definition of the mark. According to its level, it can be divided into three marking systems: the first level is the identification of ethnic origin; the second level is the identification of ethnic origin + language; the third level is the identification of ethnic origin + language identity + folklore and livelihood identity. From the perspective of time, the sign system of identity identification in Hainan is presented as the combination of historical precipitation and the construction of the times. From the perspective of space, it presents a combination of identity purification and differentiation.