1. A method for scanning, by a biological information recognition apparatus, biological information about a user, wherein: the biological information recognition apparatus comprises n recognition rows and m recognition columns comprising a plurality of piezoelectric elements, and the method comprises steps of (a) sequentially activating, by the biological information recognition apparatus, a first recognition row to an n-th recognition row and (b) then sequentially activating a first recognition column to an m-th recognition column, wherein at least one of the piezoelectric elements arranged on each of the recognition rows or the recognition columns is activated in a time series manner when the recognition row or the recognition column is activated, the activation of the piezoelectric elements arranged in each recognition row or recognition column in the steps (a) and (b) comprises following steps: a first step of setting one specific piezoelectric element among the plurality of piezoelectric elements as a first signal generation element; a second step of setting at least one piezoelectric element approximate to the first signal generation element other than the first signal generation element as a first signal reception element; a third step of generating a first ultrasonic signal by activating the first signal generation element; a fourth step of receiving a first reflected wave signal by activating the first signal reception element, wherein the first reflected wave signal is generated by a reflection of the first ultrasonic signal from a biological tissue, which is generated by the first signal generation element; a fifth step of setting any one of a plurality of piezoelectric elements approximate to the first signal generation element as a second signal generation element; a sixth step of setting one or more piezoelectric elements approximate to the second signal generation element other than the second signal generation element as a second signal reception element; a seventh step of generating a second ultrasonic signal by activating the second signal generation element; and an eighth step of receiving a second reflected wave signal by activating the second signal reception element, wherein the second reflected wave signal is generated by a reflection of the second ultrasonic signal from the biological tissue, which is generated by the second signal generation element.