A biomolecule measuring device comprising: a solution sender that is configured to transmit a reagent that undergoes a chemical reaction with a biomolecule sample to generate an ion; a semiconductor sensor that is configured to measure a concentration of the ion; a trigger generator that is configured to generate a physical environment for inducing the chemical reaction, wherein the trigger generator is configured to generate the physical environment by controlling temperature of the reagent or by irradiating an ultraviolet ray onto the reagent; a controller that is configured to control an operation of the solution sender and of the trigger generator; and a processor that is configured to identify a configuration of the biomolecule sample according to a measured result by the semiconductor sensor, wherein the controller is configured to cause the solution sender and the trigger generator to repeat an operation of transmitting the reagent while exchanging a plurality of types of the reagent and an operation of generating the physical environment, wherein the processor is configured to identify a configuration of the biomolecule sample according to each of measured results acquired by the semiconductor sensor in the repeated operations, wherein the semiconductor sensor further comprises a transistor that has a drain terminal outputting the measured result as an electric signal, wherein the biomolecule measuring device further comprises a circuit that is configured to keep a drain current of the transistor and a source-drain voltage of the transistor at constant values respectively, and wherein the processor is configured to perform a difference calculation subtracting, from the measured result after the trigger generator generates the physical environment, the measured result from when the solution sender finishes transmitting the reagent to when the trigger generator generates the physical environment, thereby removing a noise caused due to the reagent from the measured result; characterized in that the controller is configured to control the solution sender and the trigger generator so that the trigger generator generates the physical environment after the solution sender finishes transmitting the reagent onto the biomolecule sample disposed on the semiconductor sensor. a solution sender that is configured to transmit a reagent that undergoes a chemical reaction with a biomolecule sample to generate an ion; a semiconductor sensor that is configured to measure a concentration of the ion; a trigger generator that is configured to generate a physical environment for inducing the chemical reaction, wherein the trigger generator is configured to generate the physical environment by controlling temperature of the reagent or by irradiating an ultraviolet ray onto the reagent; a controller that is configured to control an operation of the solution sender and of the trigger generator; and a processor that is configured to identify a configuration of the biomolecule sample according to a measured result by the semiconductor sensor, wherein the controller is configured to cause the solution sender and the trigger generator to repeat an operation of transmitting the reagent while exchanging a plurality of types of the reagent and an operation of generating the physical environment, wherein the processor is configured to identify a configuration of the biomolecule sample according to each of measured results acquired by the semiconductor sensor in the repeated operations, wherein the semiconductor sensor further comprises a transistor that has a drain terminal outputting the measured result as an electric signal, wherein the biomolecule measuring device further comprises a circuit that is configured to keep a drain current of the transistor and a source-drain voltage of the transistor at constant values respectively, and wherein the processor is configured to perform a difference calculation subtracting, from the measured result after the trigger generator generates the physical environment, the measured result from when the solution sender finishes transmitting the reagent to when the trigger generator generates the physical environment, thereby removing a noise caused due to the reagent from the measured result; characterized in that the controller is configured to control the solution sender and the trigger generator so that the trigger generator generates the physical environment after the solution sender finishes transmitting the reagent onto the biomolecule sample disposed on the semiconductor sensor.