A surveying instrument, comprising: - a pedestal provided with a guide light irradiation unit including a light source to emit guide light showing a collimation direction of the surveying instrument to an operator, - a tracking optical system configured to emit tracking light to lock a target, - a ranging optical system which ranges a distance to the target, and - a control circuit which calculates surveying data by a ranging result of the ranging optical system; and - a transmitting and receiving unit which receives survey setting point data regarding a survey setting operation from a portable wireless transceiver and sends surveying data obtained by the control circuit, wherein the control circuit is configured to, when the surveying setting point data is received by the transmitting and receiving unit from the portable wireless transceiver: - cause the pedestal to rotate, so that its optical axis faces in a direction of a survey setting point (P1, P2); - turn on the guide light; - perform searching and scanning using the tracking light, to lock the target by causing the pedestal to rotate so that the optical axis is directed to the center of the target, and to turn off the guide light; characterised in that, when the locking of the target is disturbed, the control circuit is further configured to: - turn off the tracking light; - rotate the pedestal such that its optical axis faces in a direction of a survey setting point (P1, P2); - stop the rotation of the pedestal; - turn on the guide light and the tracking light again; - and perform searching and scanning with tracking light. - a pedestal provided with a guide light irradiation unit including a light source to emit guide light showing a collimation direction of the surveying instrument to an operator, - a tracking optical system configured to emit tracking light to lock a target, - a ranging optical system which ranges a distance to the target, and - a control circuit which calculates surveying data by a ranging result of the ranging optical system; and - a transmitting and receiving unit which receives survey setting point data regarding a survey setting operation from a portable wireless transceiver and sends surveying data obtained by the control circuit, wherein the control circuit is configured to, when the surveying setting point data is received by the transmitting and receiving unit from the portable wireless transceiver: - cause the pedestal to rotate, so that its optical axis faces in a direction of a survey setting point (P1, P2); - turn on the guide light; - perform searching and scanning using the tracking light, to lock the target by causing the pedestal to rotate so that the optical axis is directed to the center of the target, and to turn off the guide light; characterised in that, when the locking of the target is disturbed, the control circuit is further configured to: - turn off the tracking light; - rotate the pedestal such that its optical axis faces in a direction of a survey setting point (P1, P2); - stop the rotation of the pedestal; - turn on the guide light and the tracking light again; - and perform searching and scanning with tracking light. - turn off the tracking light; - rotate the pedestal such that its optical axis faces in a direction of a survey setting point (P1, P2); - stop the rotation of the pedestal; - turn on the guide light and the tracking light again; - and perform searching and scanning with tracking light.