An object of the present invention is to provide a biological sample measurement device having a high throughput obtained by being capable of early determining whether or not change of a washing condition is necessary. Provided is a biological sample measurement device including a measurement section that performs measurement of a biological sample, and a washing section that washes a biological sample contact portion, the biological sample contact portion contacting the biological sample during the measurement, the biological sample measurement device further including a characteristic judgment portion that judges a characteristic of the biological sample before the measurement by the measurement section is completed, and a washing control section that determines a washing method by the washing section based on the characteristic judged by the characteristic judgment section.
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