An embedding apparatus equipped with a hot plate configured to warm an embedding tray and a dispenser configured to dispense an embedding material in the embedding tray warmed by the hot plate, the embedding apparatus comprising: a tool for transferring or fixing a position of a sample; a tweezers holder having one or a plurality of tweezers holder holes in which a distal end of the tool is accommodated; characterized in that the apparatus further comprises: a first heater configured to warm the tweezers holder; a first sensor configured to detect a temperature of the tweezers holder; an operation part for maneuvering and setting of an operation, the operation part being provided on a display device connected to a main body of the embedding apparatus or the embedding apparatus; and a control unit that includes a CPU and a memory and which is operable based on an operation program set in advance and set signals input from the operation part, the control unit being_configured to perform temperature control of the first heater, wherein, with the tool located in a first tweezers holder hole, the control unit is configured to perform control to turn the first heater OFF until the temperature reaches a point equal to or below a first set temperature at which the embedding material adhered to the first tweezers holder hole starts to solidify when a cleaning mode is selected, and upon receipt of a signal indicating that the temperature of the tweezers holder reaches the first set temperature from the first sensor, to turn the first heater ON until the temperature reaches a second set temperature at which a sticking site between the solidified embedding material and the first tweezers holder hole is melted, such that the tool can be removed from the first tweezers holder hole with the solidified embedding material attached thereto, and configured such that, while the cleaning mode is performed, the control unit performs control to always maintain the warming tank or the storage tank at a predetermined temperature at which the embedding material is melted via a different heater (36, 38). a tool for transferring or fixing a position of a sample; a tweezers holder having one or a plurality of tweezers holder holes in which a distal end of the tool is accommodated; characterized in that the apparatus further comprises: a first heater configured to warm the tweezers holder; a first sensor configured to detect a temperature of the tweezers holder; an operation part for maneuvering and setting of an operation, the operation part being provided on a display device connected to a main body of the embedding apparatus or the embedding apparatus; and a control unit that includes a CPU and a memory and which is operable based on an operation program set in advance and set signals input from the operation part, the control unit being_configured to perform temperature control of the first heater, wherein, with the tool located in a first tweezers holder hole, the control unit is configured to perform control to turn the first heater OFF until the temperature reaches a point equal to or below a first set temperature at which the embedding material adhered to the first tweezers holder hole starts to solidify when a cleaning mode is selected, and upon receipt of a signal indicating that the temperature of the tweezers holder reaches the first set temperature from the first sensor, to turn the first heater ON until the temperature reaches a second set temperature at which a sticking site between the solidified embedding material and the first tweezers holder hole is melted, such that the tool can be removed from the first tweezers holder hole with the solidified embedding material attached thereto, and configured such that, while the cleaning mode is performed, the control unit performs control to always maintain the warming tank or the storage tank at a predetermined temperature at which the embedding material is melted via a different heater (36, 38). a first heater configured to warm the tweezers holder; a first sensor configured to detect a temperature of the tweezers holder; an operation part for maneuvering and setting of an operation, the operation part being provided on a display device connected to a main body of the embedding apparatus or the embedding apparatus; and a control unit that includes a CPU and a memory and which is operable based on an operation program set in advance and set signals input from the operation part, the control unit being_configured to perform temperature control of the first heater, wherein, with the tool located in a first tweezers holder hole, the control unit is configured to perform control to turn the first heater OFF until the temperature reaches a point equal to or below a first set temperature at which the embedding material adhered to the first tweezers holder hole starts to solidify when a cleaning mode is selected, and upon receipt of a signal indicating that the temperature of the tweezers holder reaches the first set temperature from the first sensor, to turn the first heater ON until the temperature reaches a second set temperature at which a sticking site between the solidified embedding material and the first tweezers holder hole is melted, such that the tool can be removed from the first tweezers holder hole with the solidified embedding material attached thereto, and configured such that, while the cleaning mode is performed, the control unit performs control to always maintain the warming tank or the storage tank at a predetermined temperature at which the embedding material is melted via a different heater (36, 38).