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Indonesia is one of the largest sugar cane producing countries in the world. At present, the use of bagasse is only as compost, electricity generation and etc. In the oil industry, bagasse can also be used as a base material in making surfactants that function as fluid reservoir oil injection to improve oil recovery factors, so it is good to develop a type of plant-based local surfactant with a lot of raw materials in Indonesia. The purpose of this study was to see that bagasse can increase the oil recovery factor at low salinity. The methodology used is a laboratory study using concentrations of 1%; 1.5%; 2%; 2.5% and 3% NaLS and salinities of 4000 ppm, 5000 ppm, and 15000 ppm NaCl. The Surfactant was first conducted a compatibility test, then core flooding was carried out to obtain the recovery factor value. The results obtained were surfactants with variations of 1.5% 4000 ppm; 1.0% 15000 ppm; and 1.5% 15000 ppm which passes the compatibility test with the recovery factor value sequentially is 3.24%; 3.62%; and 5.34%. This shows that NaLS surfactant can increase the oil recovery factor at low salinity by 5.34% by optimizing 1.5% NaLS 15000 ppm concentration.