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Imitation method is used in laboratory to study mud cake solidification for increasing the bonding strength of cement-- formation interface under different temperatures and different cake thickness. The results show that the bonding strength of cement--formation interface increased by 230.86%~4538.74% and 757.30%~106 537. 50% respectively when the cake thickness are 0.5mm and 1.0mm at the curing temperature 45 °C; the bonding strength of cement--formation interface increased by 656. 28%~1979. 69%and 331. 19%~5 258.82% respectively when the cake thickness are 0. 5 mm and 1.0 mm at the curing temperature 80°C. Finally, main cause of mud cake solidification for increasing the bonding strength of cement--formation interface is investigated by infrared spectrum test results and influencing factors is analyzed. [ABSTRACT FROM AUTHOR]