A method for controlling a vibration intensity measuring device comprising an acceleration detection unit, the method comprising: acquiring acceleration data (a) generated by the acceleration detection unit; and measuring vibration intensity based on the acquired acceleration data (a), at least one of the acquiring step and the measuring step comprising: judging whether or not a vibration characteristic (SI, Sv) during a period of time from the onset to the end of vibration satisfies a predetermined condition (Tr1, Tr2, Tr3), wherein the predetermined condition is satisfied if a value which corresponds to the vibration characteristic or which is obtained on the basis of the vibration characteristic exceeds a predetermined threshold value; and adjusting the calculation processing of the measuring step, if it is judged that the predetermined condition (Tr1, Tr2, Tr3) is satisfied, the method further comprising setting a period of time as a natural period, the time during which the acceleration data is acquired comprising a plurality of natural periods, wherein the vibration intensity measuring step comprises: calculating velocity values (v) in each natural period based on the acquired acceleration data (a); and calculating a maximum velocity value (Sv) based on the calculated velocity values (v) in each natural period, characterized in that in the adjusting step, if it is judged that the predetermined condition (Tr1, Tr2, Tr3) is satisfied, the number of velocity values (v) in said each natural period that are used in calculation of the maximum velocity value (Sv) is decreased. acquiring acceleration data (a) generated by the acceleration detection unit; and measuring vibration intensity based on the acquired acceleration data (a), at least one of the acquiring step and the measuring step comprising: judging whether or not a vibration characteristic (SI, Sv) during a period of time from the onset to the end of vibration satisfies a predetermined condition (Tr1, Tr2, Tr3), wherein the predetermined condition is satisfied if a value which corresponds to the vibration characteristic or which is obtained on the basis of the vibration characteristic exceeds a predetermined threshold value; and adjusting the calculation processing of the measuring step, if it is judged that the predetermined condition (Tr1, Tr2, Tr3) is satisfied, judging whether or not a vibration characteristic (SI, Sv) during a period of time from the onset to the end of vibration satisfies a predetermined condition (Tr1, Tr2, Tr3), wherein the predetermined condition is satisfied if a value which corresponds to the vibration characteristic or which is obtained on the basis of the vibration characteristic exceeds a predetermined threshold value; and adjusting the calculation processing of the measuring step, if it is judged that the predetermined condition (Tr1, Tr2, Tr3) is satisfied, the method further comprising setting a period of time as a natural period, the time during which the acceleration data is acquired comprising a plurality of natural periods, wherein the vibration intensity measuring step comprises: calculating velocity values (v) in each natural period based on the acquired acceleration data (a); and calculating a maximum velocity value (Sv) based on the calculated velocity values (v) in each natural period, characterized in that in the adjusting step, if it is judged that the predetermined condition (Tr1, Tr2, Tr3) is satisfied, the number of velocity values (v) in said each natural period that are used in calculation of the maximum velocity value (Sv) is decreased. calculating velocity values (v) in each natural period based on the acquired acceleration data (a); and calculating a maximum velocity value (Sv) based on the calculated velocity values (v) in each natural period, characterized in that in the adjusting step, if it is judged that the predetermined condition (Tr1, Tr2, Tr3) is satisfied, the number of velocity values (v) in said each natural period that are used in calculation of the maximum velocity value (Sv) is decreased.