In 1964 she defended her dissertation at the Archaeological Institute of the Slovak Academy of Sciences in Nitra on the topic "Eneolithic ceramics from Thrace and Northeastern Bulgaria".

In 1978, he defended his dissertation (habilitation thesis) on "Eneolithic Period in Bulgaria" and received the title "Doctor of Historical Sciences".

From 1982 to 2000 and 2004 to 2010, she was a member of the "Specialized Council for Ancient History, Archeology and Ethnography" at the High Attestation Commission.

Todorova was the author of 18 monographs, over 150 studies, articles, reports and reviews published in Bulgaria and abroad.

She was the discoverer of the earliest monochrome Neolithic in Northern Bulgaria and of the transition period from the Eneolithic to the Bronze Age.

[6] He studies and makes available to science the prehistory of Northeastern Bulgaria and the western Black Sea coast.

Characteristic of Herieta Todorova's scientific work was the consideration of the archeological data in a broad, over regional aspect, which turned them into important historical sources.

She delivered public lectures to promote the achievements of Bulgarian prehistory in Berlin, Frankfurt, Cologne, Heidelberg and other cities in Germany.

He has participated in 14 of its international symposia: 2 in Slovakia, 2 in the Czech Republic, 2 in Hungary, 2 in Italy, 2 in Georgia, 2 in the former Yugoslavia and 2 in Greece.

In 1993-1998 she participated in a project of the Max Planck Institutes in Mainz and Heidelberg for the study of the earliest metallurgy in Bulgaria.

In 2007, the National Archaeological Institute with a museum at the Bulgarian Academy of Sciences published another collection in her honor – PRAE: In honorem Henrieta Todorova.

[7] In 2016, colleagues and friends from Romania dedicated the collection to her (In Memory of Henrieta Todorova) with scientific articles on the topic Between Earth And Heaven Symbols And Sygns.