The method of monitoring the movement of the fetus is disclosed. Particular method restricts ultrasonic lighting in safe level, follows the principle of ALARA. Method of the disclosure which monitors the movement of the fetus with Doppler ultrasonic method, the step which totals the time when the ultra wave is irradiated to the suffering inspection person, further operation and the information regarding the movement of the fetus who calculation of step and the device which decide at least one among the operations which recommend to the further operational of step, compare frequency of the movement with standard frequency step and the device which frequency of the movement of the fetus inside step and the suffering inspection person who compare the time when it totals with 1st standard total time calculation are done and suffering inspection person it should is done, among the operations which it should recommend to the suffering inspection person at leastThe step which transmits one, it possesses. Also the Doppler ultrasonic device which monitors the movement of the fetus inside the suffering inspection person is disclosed.胎児の動きをモニタする方法が開示される。当該方法は、超音波照射を安全なレベルに制限し、ALARAの原則に従う。ドプラ超音波法により胎児の動きをモニタする開示の方法は、超音波が被検者に照射される時間を累算するステップ、累算した時間を第1の基準合計時間と比較するステップ、被検者内の胎児の動きの回数を計数するステップ、動きの回数を基準回数と比較するステップ、装置の更なる動作及び被検者に推奨されるべき動作のうちの少なくとも1つを決定するステップ、装置の更なる動作、計数した胎児の動きに関する情報、被検者に推奨されるべき動作のうちの少なくとも1つを伝達するステップ、を有する。被検者内の胎児の動きをモニタするドプラ超音波装置も開示される。
