The invention relates to the technical field of sampling of ore pulp in an ore treatment plant, in particular to a sampler. The sampler comprises a first sampling device, a receiving device, an ore sample collecting device, a driving mechanism, a controller and a shell, wherein the first sampling device is mounted in an ore pulp pipeline and is used for collecting the ore pulp in the ore pulp pipeline; the receiving device is communicated with the first sampling device; the ore sample collecting device is arranged under the first sampling device and is used for collecting the ore pulp flowing out of the first receiving and sampling device; the driving mechanism is connected with the receiving device and is used for driving the receiving device to move and enable the ore pulp in the receiving device to flow into the ore sample collecting device; the driving mechanism is electrically connected with the controller; the controller is used for controlling the driving mechanism to move the receiving device. By adoption of the sampler, a machine is used for sampling, so that a plurality of uncertainty factors caused by artificially sampling in relevant technology can be avoided; the representative property of the ore pulp is improved; the quality of final samples is improved.