The invention discloses manual energy-saving transmission oil. The manual energy-saving transmission oil is prepared from the following raw materials in parts by weight: 0.4 to 0.5 part of calcium alkylbenzene sulfonate, 0.5 to 0.7 part of mono-alkenyl succinimide, 0.4 to 0.8 part of polymethacrylate, 0.1 to 0.3 part of anti-wearing agent and 85 to 95 parts of basic oil. The transmission oil has the following advantages of good extreme-pressure wear resistance, small corrosion on copper, good low-temperature mobility, capability of resisting the low temperature of -35 DEG C, good high-temperature oxidation resistance, high adhesion and good oil film protection performance for a gear surface. The transmission oil is small in appearance viscosity, a car utilizing the transmission oil is smooth in gear shifting and rapid in response, the fuel economical performance can be improved, and the transmission oil is economic, practical, energy-saving and environment-friendly.