The fully automatic pre-makeup and bucking unit enables fast and continuous coupling make-up and breakout for various tubular products. Equipped with an automatic greasing device, this fully automatic pre-makeup and bucking unit performs pre-makeup operations automatically to improve production efficiency. Based on different production requirements, the fully automatic pre-makeup and bucking unit can be configured in series or parallel modes. The parallel configuration nearly doubles the efficiency of the series setup, allowing two tubulars to complete make-up and pre-tightening at the same time and greatly shortening operation time.