The connecting apparatus has a plurality of probes, each having a deformed portion, a needle front portion with a tip end to be pressed against an electrode portion of a device to be tested and continuous with the deformed portion, and a needle tail portion continuous with the other end portion of the deformed portion, assembled in parallel into a base plate by assembling equipment with the tail end portions brought into contact with a retraction preventive portion. Thereby, when device to be tested is pressed against the probe, the probe is prevented from retracting according to the curved state of the deformed portion.