The invention relates to a tea cake pressing machine for continuously pressing tea and a pressing method of the machine. The tea cake pressing machine comprises a main frame body, a pre-pressing mechanism, a cake pressing mechanism and a control device, wherein the control device is used for controlling the cake pressing machine to act in sequence; the cake pressing mechanism comprises a pressing mould, a cake pressing gas / oil cylinder, a pressing cavity, a bottom plate, a pushing-pulling gas / oil cylinder and a discharging hole; the pre-pressing mechanism comprises a pre-pressing bin, a bin cover, a pre-pressing gas / oil cylinder, a gate, a pushing mechanism and a tea discharging channel. The pressing method comprises the step of sequentially performing procedures of feeding, pre-pressing, cutting, cake-pressing and the like on the tea by adopting the tea cake pressing machine to obtain a tea cake. The quality of the tea cake made by adopting the cake pressing machine through the tea cake pressing method is not second to that of a tea cake made manually, and tea can be automatically and continuously produced, the manpower input, the production labor capacity and the labor intensity are effectively reduced, and the production efficiency is remarkably increased. The tea cake pressing machine is simple in structure, low in failure rate, low in equipment price, and suitable for use by a common factory.