Аннотация:The quantum theory of atoms in molecules and the orbital-free density functional theory (DFT) are combined in this work to study the spatial distribution of electrostatic and quantum electronic forces acting in stable crystals. The electron distribution is determined by electrostatic electron mutual repulsion corrected for exchange and correlation, their attraction to nuclei and by electron kinetic energy. The latter defines the spread of permissible variations in the electron momentum resulting from the de Broglie relationship and uncertainty principle, as far as allow the limitations of Pauli principle and the presence of atomic nuclei and other electrons. We expressed all forces via kinetic and DFT potentials and then defined them in terms of the experimental electron density and its derivatives, hence this approach may be considered as orbital-free quantum crystallography. The net force acting on an electron in a crystal at equilibrium is zero everywhere, presenting balance of the kinetic and potential forces, 〖 F〗_kin (r) and F(r) , respectively. We analysed the critical points of both potentials and recognized them as the points at which forces 〖 F〗_kin (r) and F(r) separately are zero (the Lagrange points). The positions of these points in a crystal are described according to Wyckoff notations, while their types depend on the considered scalar field. We found that F(r) force pushes electrons to the atomic nuclei, while the kinetic force 〖 F〗_kin (r) draws electrons from nuclei. This favors formation of the electron concentration bridges between some of the nearest atoms. However, in a crystal at equilibrium, only kinetic potential v_kin (r) and corresponding force exhibit the electronic shells and atomic-like zero-flux basins enveloped the nuclear attractors. The force-field approach and quantum topological theory of atoms in molecules are compared and their distinctions are clarified.