A sample analyzer, comprising a sample storage region, a sample-drawing channel, and a transport mechanism; the sample storage region being provided with a plurality of storage channels; the sample-drawing channel is provided with a sample-drawing position; the transport mechanism comprises an engagement slot, an actuation mechanism and a first moving mechanism; the engagement slot and the actuation mechanism are fixed on the first moving mechanism, the actuation mechanism comprises an actuator and a second moving mechanism, the actuator is drivable by at least one of the first moving mechanism and the second moving mechanism to realize the movement of the sample holder between the storage channels and the engagement slot; during sample drawing, the first moving mechanism drives the engagement slot to move to the sample-drawing channel, the actuation mechanism enables samples to pass through the sample-drawing position and to make a stop for sample drawing.