The invention discloses an optimization method of an uncertain distribution network of a distributed photovoltaic electric automobile and relates to the field of optimized dispatching of distributionnetworks. The optimization method comprises the following steps that S1, the uncertain amount of the distribution network is determined; S2, a target function is established with the minimum active power loss of a distribution network line as a principle based on the uncertain amount; S3, constraint conditions of distribution network optimization are determined, and a constraint formula is established according to the constraint conditions; S4, according to the target function and the constraint formula, variables needing to be optimized for optimized dispatching of the distribution network are solved. By adopting the optimization method, collaborative analysis can be conducted on the distributed photovoltaic electric automobile, and accordingly optimized dispatching is conducted on the uncertain distribution network.