The investigation of the environmental variation’s impact on the biosphere is one of the very interesting fields of the modern science.

In this work we present some results of the complex study of environmental variations and corresponding variations of the human blood characteristics – variations of the penetration of erythrocyte’s membranes.

We considered two parts of our environment: the space weather and the Earth weather.

The space weather we also divide into three parts for the more accurate scheme of the investigation. First part consists of the solar activity phenomena, second part is the state of the Earth’s vicinity, third part is the behavior of the geomagnetic field.

The solar parameters for the study: 1. Global characteristics of the solar activity: radioflux on the wavelength 10.7cm, solar numbers. 2. Flare characteristics: optical flares, radiobursts, X-ray flares (soft X-ray).

Parameters of solar activity effects in the Earth’s vicinity for the study: 1. Characteristics of the solar wind (density, velocity). 2. Variations of the Bz-component of the interplanetary magnetic field. 3. Values of the proton fluxes (3 energies). 4. Values of the electron fluxes (2 energies). 5. Value of the X-ray background.

Geomagnetic parameters for the study: 1. K-indices. 2. Maximum day-value of the H-component of the geomagnetic field. 3. The grade of the small geomagnetic disturbances.

The Earth weather we examined from the various points of view. Firstly we studied the number of atmosphere parameters: 1.The temperature of the air. 2. The atmosphere pressure. 3. The humidity. 4. The nebulosity. 5. The wind-velocity. Secondly we analyzed weather charts.

Most important results: we have found out that global solar variations, flare activity variations and proton events are directly sensing by human organism; geomagnetic variations are secondary in this effect. Atmosphere effects are strongly depending of the season. The most important effects occur on the extremum point of the pressure and temperature curves. The behavior of the atmosphere electricity is sensing by human red cells too.

So we can chalk out some environmental parameters, which we must carefully study if we want to forecast some changeover in the human blood and to forecast some diseases, which are the results of that changeover.