T The research was conducted to make coal briquettes mixed with biomass in the form of Sago Waste. Addition Sago waste serves as a mixture of coal briquette adhesives. The making of Bio - Coal Briquette with a mixture of sago pulp adhesive material is done to know the quality of briquettes that are created with reference based on Permen ESDM No. 47 Tahun 2006, with research fokus on 4 briquette variable and with its derivatives are volume of NaOH solution in adhesive, Normality NaOH solution, pressure of briquetting, and time of briquette drying, in order to obtain the maximum briquette composition. The research method is laboratory observation, conducted in Coal Characterization Laboratory of BPPT, Serpong, with Coal Sample from Kalimantan and Sago Waste Sample from Bengkalis District, Riau Province. The making of briquettes include sample preparation, sample quality test, determination of briquette composition, mixing, molding, drying, briquette quality test, and briquette test. After the treatment, obtained that the composition of Coal as much as 50 grams; 5 gr of Sago Waste + 5 ml of water; 0.5 N NaOH + 13 ml of water; 80 kg/cm2 briquetting pressure; 6 hours briquette drying time; and ovoid mold shape. The results of quality test on coal briquettes with Sago Waste adhesive mixture are: briquette water content 7.085%; volatile matter content of 37.28%; and calorific value of 5457.35 cal/g, are eligible based on standard Permen ESDM No. 47 Tahun 2006 for category Coal Bio – Briquette. From combustion test result, the maximum briquette temperature reaches + 668,5 0C which is reached on + 50 minutes. The average temperature during combustion is + 331.6C. With briquette mass about 870 - 890 gram for 1 time burning on briquette stove, able to burning for 4 hours more with efficiency equal to 20.61%.