Abstract: The effects of coal from different mines and hot briquetting process parameters on the cold strength of CCB were investigated, as well as the mechanism of acquiring high strength of CCB. The experimental results showed that the process parameters including the coal used, coal proportioning, hot-briquetting temperature/pressure and coal size all have significant effects on the cold strength of CCB, among which the hot-briquetting temperature is the most important factor. With the thermal plasticity of coal, the hot-briquetting process could ensure that the coal particles are in full contact with iron ore and enlarge the bonding area, thus providing the higher cold strength for CCB in comparison to cold-bonded briquette. To keep up the cold strength with the soft coal from Hegang Mine used for CCB, the appropriate hot-briquetting process parameters of CCB are recommended as follow: coal proportioning 25%-35%, coal fine size less than 90 μm and hot-briquetting pressure higher than 35 MPa.