His violent temperament was often the reason for the frequent clashes he had with the local Turks in the village of Vatasha and was often arrested and imprisoned.

With his help, during July 1905, the detachment of Dobri Daskalov managed to get out of the encirclement of the Turkish army near the village of Resava.

After the Young Turk Revolution and the formation of the People's Federative Party (Bulgarian Section) (NFP), Doncho Lazarov was one of its first members, and for some time he was the leader of the PFP in Kavaderčko.

[2][5] After the First World War he moved to Bulgaria and settled in Petrich where he worked in the Permanent district commission.

In October 1928 he was elected a member of a Commission for the reconciliation of the opposing sides in IMRO, formed by the Ilinden Organization.