An airtight device comprising: a container ; and an airtight cover disposed on the container , wherein the airtight cover comprises: a fixing bracket having at least one through hole and at least one guiding slot , wherein the through hole communicates with an interior space of the container , the guiding slot comprises a first top surface and a second top surface higher than the first top surface ; at least one door configured to cover the through hole ; and at least one pressuring handle pivoted to the door , the pressuring handle having a first section , a second section , and a rotation pivot disposed between the first and second sections , wherein the first section and the second section are configured to rotate relative to each other, and wherein the second section is configured to receive a force for driving the first section to move from below the second top surface to below the first top surface such that the rotation pivot pressures the door , wherein the airtight cover has a connection rod , and the at least one pressuring handle includes a plurality of the pressuring handles , the second sections of the pressuring handles are rotatably connected to the connection rod . a container ; and an airtight cover disposed on the container , wherein the airtight cover comprises: a fixing bracket having at least one through hole and at least one guiding slot , wherein the through hole communicates with an interior space of the container , the guiding slot comprises a first top surface and a second top surface higher than the first top surface ; at least one door configured to cover the through hole ; and at least one pressuring handle pivoted to the door , the pressuring handle having a first section , a second section , and a rotation pivot disposed between the first and second sections , wherein the first section and the second section are configured to rotate relative to each other, and wherein the second section is configured to receive a force for driving the first section to move from below the second top surface to below the first top surface such that the rotation pivot pressures the door , wherein the airtight cover has a connection rod , and the at least one pressuring handle includes a plurality of the pressuring handles , the second sections of the pressuring handles are rotatably connected to the connection rod . a fixing bracket having at least one through hole and at least one guiding slot , wherein the through hole communicates with an interior space of the container , the guiding slot comprises a first top surface and a second top surface higher than the first top surface ; at least one door configured to cover the through hole ; and at least one pressuring handle pivoted to the door , the pressuring handle having a first section , a second section , and a rotation pivot disposed between the first and second sections , wherein the first section and the second section are configured to rotate relative to each other, and wherein the second section is configured to receive a force for driving the first section to move from below the second top surface to below the first top surface such that the rotation pivot pressures the door , wherein the airtight cover has a connection rod , and the at least one pressuring handle includes a plurality of the pressuring handles , the second sections of the pressuring handles are rotatably connected to the connection rod . <EOS>