A manual hole pile digging method employing a top-fixing water drilling method comprises the following steps: (1) adopting an outer manual hole pile digging support method when the depth of a hole is less than 2m, and (2) adopting an inner manual hole pile digging support method when the depth of the hole is more than 2m. Explosive blasting construction can be completely replaced by the manual hole pile digging method; bottom fixing is changed into top fixing by proper improvement of a rock core drilling machine; the device fixing time is shortened; the digging efficiency of a foundation is improved, and the manual hole pile digging method can be widely applied to foundation excavation in a rock geological condition. The used device is small in size, light in weight, and low in demands on water, electricity and roads, and can be widely applied to construction of mountainous areas such as mountain areas and gulches with poor traffic conditions. The manual hole pile digging method has great positive effects on safety production, resource conservation and environmental protection. The manual hole pile digging method is an efficient manual drilling method for manual pile digging and hole forming of a rock stratum.