Abstract: Effects of carbon ratio (n(FC)/n(O)) on the softening-dripping behavior of carbon composite iron ore hot briquette (CCB) were studied systemically and theoretically, with the basicity 1.20 unchanged. The results showed that the carbon ratio affects greatly the softening-dripping parameters, such as softening range, melting range and dripping ratio. With the increasing carbon ratio, the softening range t40~t4 tends to narrowing then widening, and becomes the narrowest (348°C) at the carbon ratio 1.00. The melting range tD~tS also tends to narrowing then widening, and becomes the narrowest (46°C) at the carbon ratio 1.00. The dripping ratio tends to increasing then decreasing, which comes up to its highest value (24.66%) at the carbon ratio 1.08. Taking account of the softening-dripping behavior comprehensively, the carbon ratio appropriate to actual production of CCB should be set around 1.00.