Immigrant settling for many years may be so strongly influenced by local culture that we cannot tell their descendants apart easily from natives, according to some characteristic of social behav-ior and folk customs. But some residual ingredients of spoken language and basic vocabulary former im-migrant often used have been inherited and still have been using today, which can help us trace back the im migrant's descent and get to know the laws of spreading and diffusion of culture. As a latish cul-ture- developed island far away from mainland, its culture of Hainan Island have strong outer language-orientated peculiarity. That is, the culture of Hainan Island is a kind of distinct cultural that integrated highly, which is on the basis of a native background culture called as "li culture", took in a lot of nut-ritive value from mamy other peculiar culture, such as "han culture", "miao culture", "zhuang cul-ture", " hui culture", and modern culture developed by overseas Chinese, agricultural reclai mation cul-ture, western culture etc. as well. In this paper, we can know that Hainan Culture is one kind of frontier pioneering cultures which is a outcome of Hainan's peroidic developments. And we find out the truth that the present Hainan dialects result from the continuous spreading and diffusion of frontier pi-oneering cultures in the couse of Hainan development, by aalyzing the peculiarity and distribution of Hainan dialects, and by studying spreading and diffusion of Hainan culture, by tracing out the devel-opment and evolution of Hainan culture. All these help us analyses the function of verification to the spreading and diffusion of frontier pioneering culture by dialect. That is to say, practicality of a special kind of culture and its propaganda often have decisive influence on cultural spreading and inheritance. These dialects emerging in a place become popular regionally and a distinctly directive sign, which is enough to deafly indicate characterisics of im migrant activity. Dialect is a mirror of im migrant history and the latter is a source of dialect. We can sort out clear line of transplantation and evolution and forming of Hainan dialects, on the basis of studying the dialect family-tree, which help us understand the interrelationship between immigration in the course of developing frontier areas and current dia-lects.

分析了海南岛地域文化的空间分布特点及其区域差异、南海岛文化景观的地理分异、人才及农业景观的区域分布等问题。指出海南岛地域文化的空间分布与地形条件和气候等地理要素密切相关，各种文化景观的分布总体上呈现沿海拔依次成圈层展布的特点：沿海平原地带城镇密布、人口众多、工业发展、交通设施齐备、整体文化水平处在最高层次、岛内丘陵、山地地区文化相对落后，另外，东部地区普遍先进于西部地区也是一个明显的特点。

开疆文化是一种开发、开拓边疆的文化。开疆文化的传播是通过众多文化要素的逐渐渗透、传输而实现整体状况改变的。开疆文化在海南的传播扩散及其历史影响则又可以从地名等文化要素的演变中得到反映进而从，一个侧面印证开疆文化在海南岛的传播、扩散及影响。