Was born in Moscow. Mother - Lyarskaya Akulina Lukjianovna. The wife - Vanda Frantsevna Gavrilova.

In 1938 he had been selected on a leading role in first two films under Maxim Gorky's trilogy. This role became his unique work on cinema. Upon termination of shootings the first set he had presented the camera, and after completion of the second set had awarded with a medal.

In 1939 Alexey had a rest in Artek.

With the beginning of war he had left on front. After the short period of study he had been directed on Northwest front to area Lychkovo - Lyubnitsa. In structure of 365-th a separate artillery battalion was at war on Demjanski Battle and was lost on February, 8th, 1943.

Alexei was buried in village Kipino of area Demjansk of the Novgorod area. Pupils of the Kipino school had created in it a corner of memory of A.Lyarsky.

Nowadays the Kipino school are not present, it has merged with other, larger school as the village in Russia, in fact, dies out. The monument to 800 fighters who had lost at Kipino, still stands. Also Alesha Lyarsky was buried there.