Oil field floor pipeline quick-acting connector

The invention relates to a quick connector of ground tubes of oil field, wherein it is formed by upper connector, positioning steel ball, spring, connecting sheath, sealing ring, lower connector, strong magnetic plate, locking pin, and unlocking hole; said upper and lower connectors are inserted; the upper end of connecting sheath has spring and positioning steel ball; the upper end of lower connector has sealing ring, to be sheathed into the sealing groove at the upper end of lower connector; the middle of lower connector has locking pin; the strong magnetic plate and unlocking plate are at the lower end of connecting sheath; when the pressure of tube is zero, the locking pin can be adsorbed by the strong magnetic plate; if it is not adsorbed, other matters can lift back the unlocking hole; and the strong magnetic plate is connected to the screw of lower connector. The invention has high sealing property and easy detachment.