A probe device includes one probe unit at least. Every probe unit is composed of a central part, an upper stationary surface, a lower stationary surface and two probe parts. The upper stationary surface is equipped with at least one open-type first corresponding part and the lower stationary surface is equipped with at least one open-type second corresponding part. And the first corresponding part and the second corresponding part are used to limit the probe unit movement towards the upper stationary surface and the lower stationary surface. The probe device also includes a main body, which is provided with at least one first stationary part and at least one second stationary part and a plurality of probe units in flake shape and parallel with each other in general. The two probe parts are positioned on two ends of the probe units respectively. The first corresponding part is the first stationary part of the corresponding main body and the second corresponding part is the second stationary part of the corresponding main body. Therefore, the probe unit is limited and positioned by the first and second stationary part. The utility model has the advantages of simple probe assembly and easy probe replacement.