A three-dimensional survey apparatus which acquires three-dimensional data of a measurement object, the three-dimensional survey apparatus comprising: a collimating ranging unit which irradiates the measurement object with first ranging light by collimation of a telescope portion to measure a distance to the measurement object and to detect a direction of the collimation; a scanner unit which is integrally provided with the collimating ranging unit and rotatably provided relative to the collimating ranging unit and which acquires point group data with respect to the measurement object by performing rotational irradiation with second ranging light to measure a distance to the measurement object and to detect an irradiation direction of the second ranging light; and a control calculation portion which is provided in at least one of the collimating ranging unit and the scanner unit, characterised in that a direction of a reference collimation of the scanner unit is set and fixed in advance, and the control calculation portion is configured to store coordinates of a reference point of the collimating ranging unit and a direction of a reference collimation of the telescope portion by a backsight at a survey start position, determine a relative angle between the direction of the reference collimation of the telescope portion and the direction of the reference collimation of the scanner unit, store first point group data acquired at a movement source position prior to moving the three-dimensional survey apparatus by controlling the scanner unit, store a direction of a first collimation of the telescope portion oriented from the movement source position toward a movement destination position after moving the three-dimensional survey apparatus, store a direction of a second collimation of the telescope portion oriented from the movement destination position toward the movement source position and a movement distance between the movement source position and the movement destination position, calculate and store coordinates of the reference point at the movement destination position with the survey start position as a reference based on the direction of the first collimation, the direction of the second collimation and the movement distance, and stores second point group data acquired at the movement destination position by controlling the scanner unit. a collimating ranging unit which irradiates the measurement object with first ranging light by collimation of a telescope portion to measure a distance to the measurement object and to detect a direction of the collimation; a scanner unit which is integrally provided with the collimating ranging unit and rotatably provided relative to the collimating ranging unit and which acquires point group data with respect to the measurement object by performing rotational irradiation with second ranging light to measure a distance to the measurement object and to detect an irradiation direction of the second ranging light; and a control calculation portion which is provided in at least one of the collimating ranging unit and the scanner unit, characterised in that a direction of a reference collimation of the scanner unit is set and fixed in advance, and the control calculation portion is configured to store coordinates of a reference point of the collimating ranging unit and a direction of a reference collimation of the telescope portion by a backsight at a survey start position, determine a relative angle between the direction of the reference collimation of the telescope portion and the direction of the reference collimation of the scanner unit, store first point group data acquired at a movement source position prior to moving the three-dimensional survey apparatus by controlling the scanner unit, store a direction of a first collimation of the telescope portion oriented from the movement source position toward a movement destination position after moving the three-dimensional survey apparatus, store a direction of a second collimation of the telescope portion oriented from the movement destination position toward the movement source position and a movement distance between the movement source position and the movement destination position, calculate and store coordinates of the reference point at the movement destination position with the survey start position as a reference based on the direction of the first collimation, the direction of the second collimation and the movement distance, and stores second point group data acquired at the movement destination position by controlling the scanner unit.