The invention discloses a distribution network photovoltaic acceptance capacity computation method based on voltage over-limitation and uncertainty. The computation method comprises the following steps: 1) generating a plurality of photovoltaic access scenes for a power distribution network, and constructing a load active demand interval value of any time quantum t in one day at the same time; and2) computing the photovoltaic acceptance capacity for each photovoltaic access scene. The method disclosed by the invention sufficiently considers the operation demand of the actual network distribution, and further considers the uncertainty change features of the photovoltaic and load, so that the computed photovoltaic acceptance capacity has better adaptability and feasibility.