The invention relates to a measuring device for action delay of a dry contact of electronic equipment. The measuring device comprises detection cables, a signal detection circuit, a parallel interface, a computer and a switch, wherein the detection cables are arranged at the two ends of the dry contact of the electronic equipment to be measured, the detection cables are connected with the signal detection circuit, the output end of the signal detection circuit is connected with the computer through the parallel interface, and the switch is used for being connected with the computer and the electric equipment to be measured through different interfaces. The measuring device completely accords with information streams generated when the electronic equipment used in the power industry runs actually, can guarantee that the action delay of the dry contact of the electronic equipment putting into running meets technical condition requirements, avoids power system accidents caused due to the fact that the action delay of the dry contact exceeds the standard, and reduces life and property losses. Furthermore, the measuring device is high in measurement accuracy and simple and convenient to operate, can be used in a universal method for measuring the action delay of the dry contact of the electronic equipment used in the power industry, and has extremely wide application fields and prospects.