Culture is the identity of a hereditary area. In the cultural activities of society embodied the mathematical elements that needed to be explored. The purpose of this study is to describe ethnomathematics on the Bunga Tujuhbelas Illisel motif of the Abui tribe's original Batulolong on Alor island and its integration in mathematical learning. The study is qualitative work using ethnographic research design. The number of informants in the study were 5 weavers over the age of fifty. Data is collected by way of observation, documentation, and interviews. The data is analysed using the ethnomathematics characteristic. The study shows that there are ethnomathematics in the Batulolong woven cloth of Abui tribe’s. Calculating how many threads it would take to form a motive with the lowan unit. In the activity to design the motif of Bunga illisel includes the concept of geometry of shape, geometry of transformation, odd numbers pattern, even number patterns, palindromic numbers, sets, and combinations. So, the mathematical concepts of schools in a culture weaving the traditional Batulolong can be developed in learning and thus lead to new innovations in school mathematics. So that learning becomes more contextual and fun, and culture is increasingly known, loved, and preserved.