Quick connecting structure

A quick connecting structure comprising:

• a plurality of longitudinal parts, each including two symmetrical side surfaces on which two first retaining slots are defined, each first retaining slot being formed in a dovetail shape and having a plurality of positioning holes equidistantly formed thereon;
• plural connectors, each being formed in a dovetail shape to correspond to each longitudinal part and including a second retaining slot formed on a front surface thereof and in a dovetail shape, two parallel recesses defined on a rear surface thereof, a fixing portion defined between the two parallel recesses, two flexible moving portions formed on two sides thereof, and two coupling segments for coupling the fixing portion and the two flexible moving portions, the fixing portion having plural posts for retaining with the plurality of positioning holes;
• a plurality of horizontal parts, each including two engaging blocks retained in two sides thereof, and each engaging block having an insertion extending from one side thereof and an engagement seat joining with the insertion, and the engagement seat being formed in a dovetail shape to correspond to the second retaining slot.