The invention provides a special electronic seal lock of an oil tank truck. The special electronic seal lock comprises a lock body and a lock belt; one end of the lock belt is fixedly connected with the lock body; a through hole for the lock belt to pass through is arranged in the lock body; an inclined hole communicated with the through hole is arranged inside the lock body; a spring and a plug are mounted inside the inclined hole; a steel ball is arranged at the communicated position of the inclined hole and the through hole; the steel ball is supported by a spring; the lock body is externally coated with a shell; a storage box is connected with the shell; and a chip is mounted inside the storage box. When the seal lock provided by the invention is in use, the lock belt passes through a sealed position of an oil tank, and then passes through the through hole in the lock body; and the steel ball is pressed on the lock belt under the effect of the spring inside the inclined hole to lock the lock belt, so that the seal process can be completed. The chip is mounted inside the storage box; data is input into the chip; and each seal lock has an individual sequence number, so that the seal lock can be managed by a data management system, and has an anti-counterfeiting property.