The importance of this research is to ensconce the historiography of Masjid Tua Kampung Laut through data collection, observation, analysis and comparative study on ancient mosques at Malay World with emphasis on Masjid Agung Demak situated at Jawa Tengah Province. Both mosques have similar characteristics on typology but have different histories. The historiography of Masjid Tua Kampung Laut is related to the spread of Islam to the whole Malay World especially at Jawa Island and Champa, however until today has no cross research been done to correlate the historiography of the three places. Eventhough Masjid Tua Kampung Laut has a unique history, not much research and writing have been done about it. So far, most of the writings on the mosque are done by Abd. Rahman Al-Ahmadi, students of Universiti Teknologi Malaysia, Abdullah Mohamed (Nakula) and Salleh Mohd. Akib. These researchs and writings were made based on heresay and laymen observation to the surviving structure. Therefore, this research is made with the intention to enrich and develop intellectual discourse in the aspect of traditional Malay architecture especially on the development of Muslim architecture of Malay World. The scope of this research is focused on site survey with critical and analytic observation, verbal information by the local communities and literature reviews. From the gathered information, a theoretical framework is developed concurrent with the rising of new issues which all the while have not been discussed in a proper systematic way especially on the aspects of design approach and construction tradition of both mosques. Besides that, the ealiest theories on the origin, architectural approach and construction aspects were intepereted in different perspectives. The outcome of this research will provide a clearer overview on architectural development of the earlier Muslims in the Malay World.